Rispond is under pregnancy category C. It means that either studies in animals have revealed adverse effects on the fetus (teratogenic or embryocidal or other) and there are no controlled studies in women or studies in women and animals are not available. Drugs should be given only if the potential benefit justifies the potential risk to the fetus.
Best to talk to your OB before resuming Rispond. He or she might give you a medication that is safer to use during pregnancy.