Hi, I am 41 and had my tubes (I was told) cut and burned 16 years ago after having my youngest c-section) last normal af was Feb 25th-26th-27th light flow (only had to change pad every 12 hours) had sex March 9th, early morning March 13th my lower abdomen felt heavy (which is new) and crampy and started bleeding, went on to have light af till the 16th then only when I wiped until this morning, back has been achy stomach lightly crampy, does this sound like menopause or could I possibly be pregnant?