You will have to discuss with your doctor the effects different treatments could have on an unborn baby.
I have seen some information on RSD and pregnancy on Hooshmand's RSD puzzles. Here are links to two:
http://www.rsdrx.com/rsdpuz4.0/puz_7.htm
http://www.rsdrx.com/rsdpuz4.0/puz_141.htm