Effects of Long Term Birth Control Pill?

I am 34 years old and I ahve been on the birth control pill for almost 20 years. i went on the pill at age 15 for pain control. i woudl be up night s curled up in a ball in severe pain, woudl miss school, work, what have you. Now fast forward a few years. Got pregnant almost 9 yrs ago and miscarried, got preganant right away again. This all happening while waiting for an appointment to have a laproscopy doen to find out if I had endometriosis or not. Never did hear from hospital about an appt till this day actually. had my son went back on the pill shortly after. Went back to the specialist a few years later again because of the sever pains, was always having cysts on my ovaries rupturing, I woudl keel over in severe pain, on the lfoor curled up like a ball crying it would hurt so bad. This happened one time in a department store, laying in the isle on the floor curled up(was my place of work at the time). this pain strikes at any given time. Went back to specialist after him years before telling me he thought i had andometriois he came to the conclusion it was ovulation and reccommended taking my BDP back to back to eliminate my period. I have been doign this for a few years and if I miss a pill i spot. I just came off of a 5 week long period, mostly continuous spotting. I have been back and forth ot my family doctor who has suggested trying different pills, depo shot, nuva ring and now I went back today for a referral to a different specialist and the doc tried to convince me instead of seeing a specialist to get a IUD. Which yet again is another form of birth control. I do not need birth control as my husband has had a vasectomy and we do not plan on reversign it any time soon. My request is going to be to have an endometral ablation done as I have heard of its successes through people I know who have not had near as many problems as I have. just wondering what your take on this might be. I also have a family history...both parents and extended family having cancer...alldifferent types of cancer as well. Any opinions or suggestions are welcome. Thank you