L.C.
This is just my opinion...
I would give all the drugs a break and see if your body can get back on its' normal cycle (you said you didn't have a problem getting your period before the miscarriage).
How sure are you that you have PCOS? Have you researched the symptoms or are you just going on your doctor's suggestion? Are you seeing a general OBGYN or a fertility specialist?
I don't have PCOS but I did suffer a miscarriage along with trouble concieving. I'm very sorry for your loss. It was a very tough experience for me. After our loss, we started to see a fertility specialist who was amazing. I would highly suggest seeing one if it is an option.
Do you feel like your doctor may be jumping to conclusions and putting you on too many drugs? It seems so unnatural to me to go that long w/o a period, but yet your periods used to be normal??? You've already had one healthy baby so that's a really good sign that your body knows how to get pregnant and stay pregnant.
I can imagine how frustrating this must be for you. I wish you lots of luck!