I also have IBS, Endo & Adhesions. What a combo! They never can seem to find my left ovary for all of the adhesions I have. It's there, but not traceable!
May I suggest you get a new gyno? Having children is not a cure, just a stop-gap measure that sometimes eases the symptoms after delivery. Keyword - sometimes. Mine got worse after I had my one and only child. I have had every treatment short of a hysterectomy (not a cure, I'm healthy, it's staying). I was on Lupron twice in 5 years. Now that worked wonders. Only thing is with Lupron, you're in chemical menopause (woo hoo) so you have to suffer through those symptoms. Anytime you do something chemical, symptoms are much worse.
First go around, not bad. I had no period for about 8-10 months, really helped for about 18 months and then of course, everything goes back to normal.
Second go around way stronger menopause symptoms (took light dosage of natural hormones prescribed by the doctor), had about the same result as above.
Lupron is a good treatment, of course they probably have something different and better now. This was about 10 years ago.
I still have all 3 and I'm still waiting for 'natural' menopause to kick in. I'm old enough, but I'm still waiting for something to happen.
Birth control pills, Depo and other forms of hormones can be used to regulate or temporarily stop your periods/endo, which can provide relief. You might also check out the endometriosis association for more information as well. They were a godsend to me years ago.
Hope this helps in some small way. I feel for you.