I have bipolar I, OCD, Panic/anxiety disorder... AND health anxiety?

I was diagnosed bipolar at about 13, OCD about 2 years ago, Panic disorder 4 years ago, and for the past 8 months I have had an obsession with my health and dying. Why am I having all these issues. I compulsively check my body for lumps, I am afraid all the time of having cancer, and I dont know how to make it stop. I have been on every medication out there from lithium, zyprexa, depakote, geodon... a lot of anti depressants... several anti anxiety remedies.... I have never found a combination of meds that works for me and still be functional. I am currently not medicated and I know that that is not a good thing. I see my doc every week and because I refuse medication we just do counceling sessions. Believe it or not, even with my multiple diagnoses I am a successful person. I am in management at my job, I am able to maintain my home and pay bills, and raise my child all alone. That is why my doctors arent pushing meds anymore. I still wish I knew of some miracle pill or something new that may help me... any suggestions?