Eshy-
I was on 6MP for about 3 or 4 years. Even way before I was planning to get pregnant I asked my Dr. if I could get off of it since I was doing so good and his response was: 'You're doing good because you're on it!'. ....I'm no Dr., there are of course pros and cons on this. So anyway, I stayed on it, got pregnant, had a freakishly easy pregnancy and I stopped the 6MP around 36 weeks. I felt no different - it's not like I woke up the next morning and could tell I quit taking it.
I was just taking Pentasa while nursing. The baby was born in June and around Christmas time it seemed like I was losing a lot of weight, but I still felt fine. I flared up in Feb. (nausea, vomiting, stomach aches) and they gave me some prednisone for a month and that was it. didn't run any tests or anything. they told me it was up to me on how long i wanted to nurse. they were understanding that i really liked nursing and it was beneficial to the baby, on the other hand it'd probably do my body good to be done w/it. i quit nursing in april (?) and just continued taking pentsa only. then in july i had another flare up and that's when my new dr. (my old one just moved too far across town for me) ordered a few tests and found lots of fistulas and started me on remicade. i've felt great ever since.
i hope to get pregnant again this spring or summer. i will stay on remicade during pregnancy. i'm pretty adement on nursing again, so i'll take my chances.
good luck!