Thanks from new member

Hi a quick intro (because of course it's 3 am), and a thank you for being here. Reading other people's experiences of anxiety has gotten me through quite a few bad turns.
I found this forum tonight by googling anxiety and first day of period. My worst attacks were during my period, one where I thought I was dying because all my body organs had shut down in my sleep, and more recently I though I was having a heart attack and went to ER.
Tonight I woke up with ringing in my ears (my longest running symptom) and my brain screaming YOU HAVE CANCER. Either an adrenal tumour or abdominal aortic aneurism maybe? Hate this crap...
I keep feeling a pulse in my abdomen which is worse when I roll on to my left side. Does anyone else have this? Does it wake you up ?
Anyway, mostly I have nocturnal panic attacks with the occasional day of hell. I've tried beta blockers and recently an anti-depressant that triggered a bipolar hypo mania. Now I'm back to just trying to cope. I think my heart palpitations are better when I'm not on any meds.
Bit longer than a short intro but thanks for reading.