Endometriosis surgery and ectopic pregnancy risks

I had endometriosis at the age of 16 and had surgery for it then. i'm now 25. when i had the surgery, my dr. me that he didn't forsee me having any fertility problems. After years of being careless at times, i was convinced i couldn't conceive and then in may of 2006 i got pregnant, not even 6 months after getting off the depo shot. However, during my c-section with my daughter, my OB told me that i had so much scar tissue all over my ovaries and tubes that he didnt know how i was able to conceive in the first place, let alone carry her full term and deliver a healthy baby. he said he tried to remove as much of the scar tissue as possible, but he told me not to be surprised if i have problems with ectopic pregnancies in the future. He said my daughter should have been one. she just turned 2 and my husband and i have decided its time to try for a brother or sister for her. i'm really really concerned and scared that it will be ectopic and non-viable if i do get pregnant. While on the shot, i hardly ever got a period, except for when it was time for my next injection, i'd spot for a couple weeks until i got it.Has anyone else ever experienced these types of problems, and what have your results/problems been? please pray for my family that God will see fit to bless us in the way He knows is best, whether it be with a new bundle of joy, or with more and more love to give the child we already have.