Constant anxiety and stress

For the past 6/7 years I have suffered with anxiety attacks. I literally cannot get over them, in high school i found myself avoiding lessons, skipping important assembly's and all sorts all out of the worry of getting an attack there. I learnt to cope with my attacks a little more as ive grown older, but just recently ive found that ive hit the lowest low and feel incredibly alone in trying to get over this. No body really understands it, and ive been to the doctors before who referred me to a psychologist. He helped me talk over what was making me worry and it kind of helped me to rationalize things, but never 100% get over it. I stopped seeing the therapist after 5/6 sessions and its been several months since my last session and i feel totally depressed about my whole anxiety.

The main thing that i can think makes me get panic attacks are worries over my health. Like i said, im incredibly health conscious and forever worrying about getting ill or sick. I have a huuuuge phobia of throwing up and go to extreme lengths to avoid it. I am fairly thin anyways and i find it nearly impossible to gain weight (I link this to the fact that i never feel at ease or relaxed and im always on edge.) I just feel totally lost with the whole anxiety issue and i feel that no body really understands me, or what im going through. I sit up at night crying trying to convince myself that one day i'll just