Ovulation after miscarriage

I had a miscarriage last month, may 14th. I have PCOS and have an average of a 55 day cycle sometimes longer, so it’s extremely hard to track my ovulation. I put my miscarriage in my app as the day of my menstrual and it says I am supposed to ovulate in one week, I have a really late ovulation due to my cycle being long. But my breasts have been sore for 6 days already and been very nauseous along with subtle cramps. I shouldn’t be getting my period for 3 more weeks if my cycle stays how it has been. Could I have ovulated early due to my miscarriage and be pregnant? I have taken pregnancy test and they are negative, but I just feel pregnant. Anyone got pregnant right after miscarriage??