Dizziness, fatigue, nausea, diarrhea

Fatigue: even when I'm well rested, I am super tired all the time! Even after 8-10 hours of sleep, a couple hours after waking up, I am ready to go back to bed.

Dizziness: I don't know what causes it, but I get dizzy for long periods of time sometimes. Sometimes I feel like I could pass out, but I never have.

Headaches/migraines: when I get dizzy, sometimes I get a headache or a migraine. Last week I got a migraine that didn't go away until yesterday…. I had it for 6 freaking days.

Also, when I'm dizzy, sometimes my heart kind of flutters and my ears ring. I've almost lost my balance a few times.

I've had some stomach issues along with this… I have a lot more gas than a normal person would, I randomly get diarrhea, and my bowel movements are pretty irregular.

After I eat, sometimes I get nauseas or diarrhea. But I also get nauseas or have diarrhea not necessarily after eating.

This has been going on for a long time, the dizziness and fatigue have gotten exponentially worse. Went to the doc yesterday, and it was no help.

I am getting really frustrated not knowing what's wrong with me… It would be extremely helpful if someone who knew what they were talking about would help me out a little...