Me and my boyfriend had unprotected sex on the last day of my fertile window , he cummed and then stuck it back in seconds after. Well I've been having slight cramping ever since , sore breast & nipples ,lower back pain from one side to another  I'm more tired than usual & having a lot of cm ( I'm usually dry after ovulation ) and now I'm feeling a stretching/ burning feeling in my stomach. The cramps are on and off. When I usually do cramp before my period they are usually pretty bad but these aren't bothering me. Could I be pregnant? I just don't feel right.