Pcos pregnancy symptoms

I have pcos and have somewhat irregular cycles. Typically it's every other month (only one ovary has cysts) I feel like I am pregnant frequently and not. I think it's just that my hormones are off balance. Does anyone else ever feel absolutely off within a few days of having sex ? My husband and I do not use protection because my doctor said it might take a while to get pregnant, so we are not stressing it. I can usually tell when I might be ovaluting because my sex drive goes through the roof. Within days of having sex during this time I'm feelin flower back pain, and somewhat crampy. Anyone one else with pcos have this confusing hormonal shifts and pregnancy like symptoms often ?