This is a hard thing to deal with a long with Crohn's... I can relate
I had an ectopic pregnancy at 28 due to blocked fallopian tubes, later had a HCG test that sort of 'flushed' things out but it still took me 18 months to get pregnant on my own. My corhns wasnt as bad then and I was on no meds. I do now have 2 beautiful girls now and would have loved a 3rd but its so bad now that I dont see myself being well enough to care for my 2 kids and be pregnant.
I hope you work things out... I tried acupuncture and it really helped relax me and I think helped me get pregnant!