TTC and prescription drugs

I periodically suffer from sciatica, and right now I have it bad and it has been over a month. In the past, my doctor has given me steroids for this issue. My back isn't improving, but I'm afraid to start taking steroids or really any other prescription while TTC. 😕 Anyone else finding yourself ignoring minor medical problems for this reason? Not sure how bad I should let things get before I have to say "enough is enough" and make an appt.