I am getting LapBand on the 17th!! Very Excited but a little worried too.?

I had a lumpectomy at 19 while 71/2 months pregnant (thankfully benign), then at 25 I had to have exploratory surgery, followed by a hysterectomy 1 month later. Is doing another surgery a bad idea? Has my "luck" ran out? -all the other surgeries turned out w/ no complications.. I'm 27 now, and just overweight enough to have the surgery, I used to be able to lose weight just fine, but with the hypothyroidism I am finally able to maintain weight without gaining, but find it impossible to lose weight. -I gained 100 pounds in three years, the same three years that I had the exploratory surgery, my hysterectomy, and my thyroid dropped. The weight started with the chronic pelvic pain, and just kept rising after. I've maintained my weight the past 14 months, just can't seem to lose any of it. Any suggestions, opinions, advice, or first hand experiences out there?!!