What yall think?

I have a three month old I had my period when he was 7 weeks old which is normal the doctor said so in February I had my second one since he been born and it was two days late and my baby is bottle feed I never breast feed him but for last month or so my breast have been real full and heavy on and off which my milk had dry up when he was 4 wks and stop till last month it comes out a little so could I be pregnant and just have period or when my boobs feel heavy or full does it mean bout ovulation