SORE BOOBS AND CRAMPING SINCE MY PERIOD ENDED!!

alexis
I got off my period June15 and today is June 28.  Threw out that period of time I been having cramping and sore/tender boobs this happens sometimes. But only happens when I'm finna strt my period when I'm past Mid Cycle I'm usually 39 days of my cycle but mycycle switched up to like 37 days to even 40 I had sex twice this month but it was durning my dry days !  I JUST NEED ANSWERS WHY AM IM CRAMPING SO MUCH AND WHY DOES MY BOOBS FEELING LIKE THIS FOR LIKE DAYS STRAIGHT!! i been having sore. Boobs and cramping it all strted when I started my period !!