Panic attack? Heart attack? Is this at all normal?

I apologize for the extremely long post but I figured since this was my first time ever on any board or talking about this problem I'd give my life story. In advance thank you to anyone who has the patience to read this and try to help me with what I might be going through.

My first Panic attack happened when I was rushed in for an emergancy c-section were they continued to try to give me a spinal epidural in a military hospital with dr's I had never seen before, multiple failed attempts I started to panic. I had never in my life ever felt the way I did that day. Like I was dying, nothing really hurt but I felt my brain made everything seem 100 times more intense than what it was. I kept thinking I am going to dye and I begged them to not make any incision at that moment. I was shaking and crying and kept telling my husband I was going to dye. I honestly felt so scared I was risking them to not take my baby out of me because I thought I was dying. It all felt so real tunnel vision, with every blink of the eye I thought I couldn't open my eyes again. It was just going to go dark. My heart was racing and it was completely uncontrollable. After they got her out I was taken to the recovery alone again I thought I'll never see my baby, my legs will never have feeling again. My mind was racing. After I saw my daughter I felt silly nearly embarrassed for the way I had reacted and the dr's probably thinking I was a basket case. I never had another episode until my second daughter was around 1.5 years old, her pregnancy went well I figured I would try for a vbac since the c-section was so traumatic I literally cried from just the stress of having to go through another one. My vbac attempt failed but I never once freaked out like I thought I would. It went smooth besides my blood pressure dropping and feeling extremely light headed until meds upped my blood pressure again. Never once had I felt any anxiety during or after that even with having two kids on my own as a stay at home mom it all went very smooth. Until I tried weaning her from breast feeding at the 1.5 year mark. I literally had to lock myself in the bathroom and cry because I felt I couldnt get away. Like I was going to have a heart attack the pressure was unbearable. She was such a good baby and from the fault of myself very clingy to me. I just had a moment I really wanted my body back and it was so bad I literally had to take walks around my house while the girls were napping to speed my heart rate up because I felt so jittery and emotional it actually calmed me down. I took myself to the ER a week later at the age of 26 fully convinced I was having a heart attack. An ekg and normal heart rate later I felt fine again just embarrassed at the dr telling me I was just having a panic attack. This was the second time I was told this. Yet never received any medical follow up.

Fast forward to now. I am 27 haven't had a single episode of overwhelming panic Im going crazy and think I am dying attack since then and overall feel healthy. The only time I feel true serious anxiety is during stressful events or when my children cry, I don't know why but anytime my children whine for no reason I get tension in my jaw and overall feel like a balloon filled up too much with an overwhelming tense feeling. It's horrible I some times get anxiety just from being around my youngest daughter because she is a big fan of whining :(

Twice I've had a tightening of my chest area recently though, sometimes I feel a tingling ache in my jaw different fron tension almost as if its following a artery, awkward twitch in my eye from stress or occasional severe heart burn. But this heart tightening I had lately is like no other. It's right above my left breast the size of my hand and also in a straight line in the center of my chest. The first time I took a shower tried stretching and just overcoming the pain. If you can imagine a charlie horse in your leg that's exactly what it felt like. But this second time it really got to me. Both times it has happened at night. I was leaving my friends house when I felt the charlie horse feeling went to the bathroom stretched my arms tried hunching over to crack my back and get rid of this weird tightening pain. I jumped off their small porch and hoped into my car just trying to just ignore the pain when all of a sudden I felt incredibly ill nausea, light headedness, hot and cold flashes, and a feeling of nearly food poisoning where you feel naseated, diarrhea and chills. Again I felt that I was going to pass out any minute I tried stretching, concentrating on the radio and rolling the window down. I was at a stop light and felt my heart flutter extremely fast got tunnel vision and felt like I was going to black out. Luckily I lived at the next turn so I just got out at my house and tried walking around outside to not scare my kids if I went inside. I was at this point shaking uncontrollably and felt unbelievably weird. My chest I dont believe was even hurting anymore I cant remember all I know was my body is what I was worried about. The chills the black out feeling the weirdness and emending doom feeling was more than I could handle. I managed to drive about a mile down the road to the ER where there was no nurse in the waiting area I had people staring at me like I was crazy but I had to pace back and forth cause I thought if I sit down Im going to pass out. The nurse came out and I was shaking so bad I couldnt stand it she had to give me a bag because I had the urge to vomit and was dry heaving for approx 15 minutes after that but never vomited and my mouth became extremely dry. She raced me back to the bed where they monitored my heart and blood pressure etc. When I went in my heart rate was at 100-105 I was shaking, scared and very very cold. And felt again I was going to die. Again I dont know if I was still having chest pain it was all the side effects that got me scared. The chest pain from I remember was a severe charlie horse feeling that lasted about a minute total with side effects freaking me out for about 20 minutes after. I was kept in a room alone for about 20 minutes and kept looking at the heart rate monitor thinking was I really dying? Did I have a heart attack? Is their something wrong? They finally gave me an anti nausea medicine and soon my heart rate was at 65-70 again but I was having this back heart burn feeling. Im thinking again in my head again is this a healthy heart rate am I going to be ok, am I dying? I was so scared I just feared the worse. The dr explained she thinks Im fine ordered an ekg and let me sit for another 20 minutes. When she came back she said the ekg looked fine and believed I had a panic attack but didnt want to open a can of worms tonight since my heart rate was better and my ekg was normal to just follow up with a family dr. I went home thinking I was going to be completely fine. The passed few days have been hell. No pain but I feel like I am terrified of experiencing that charlie horse chest pressure pain again. I avoid lifting anything heavy as I feel it will trigger it. At work I cannot focus my eye sight is horribly afftected. Like my eyes cannot focus in the light. When I talk to customers for more than 5 minutes I feel like I will pass out. I nearly had to excuse myself today after an awkward hot feeling on the back of my neck and racing heart. Dim lighting helps me feel normal. I know this sounds ridiculous Im sure but I feel like the bright halogen lighting is really messing with my head. My job is commissioned based and very stressful but even more now that I feel Im walking around unattached from reality. This has never happened to me before but the only place I feel like myself is at home with my kids. I dont feel out of whack at all here. On the way to work I feel fine as soon as I get to work I feel spaced out, my jaw hurts like having TMJ. My head is in a fog. I feel almost like I'm in a dream. I literally feel crazy for saying that but I cant explain it as anything else. My mom came over to check on me and my mom and I are not very close but when I explained the chest pressure and the symptoms after that I literally burst into tears. I never cry in front of my mom. I knew this was serious and very emotional for me to feel this way. I just want to stay home and get better but I have to go to work. I dont feel right at my job and literally LOATHE thinking about even walking in. I dont know what to do. I have an appt to see a cardiologist for my own satisfaction and hoping to god Im healthy and perfectly fine but what are these side effects that are haunting me? Is this anxiety or panic is it all in my head? Should I seek medical attention for this? Seriously, am I crazy?