PMS more extreme since miscarriage

I miscarried back in March and have been TTC ever since. I have found that my emotions are really out of wack before my period/on the first day of my period since I miscarried. I feel extremely sad/depressed for one or two days. I am on the verge of tears for an entire day, then the next day I am completely fine. I am wondering if this day of sadness could be linked to hormones shifting as I have noticed it usually happens at the same time as my temperature drops. Obviously it's partly because of the loss I experienced too, but I just feel so helpless when it happens. Is there anyone out there experiencing something similar? Any insight?