You should definitely research each medication & see which of those have low sex drive as a side effect, especially if your doctor didn't tell you that could happen. Also, do they know you have PCOS & take birth control? It's really important that all your doctors know what's going on & who's giving what to prevent unwanted side effects.

If you find out one of these is causing this you can talk to the doctor giving it as suggested & tell them you want an alternative with the same benefits that doesn't affect sex drive.