OK me and my boyfriend have had unprotected sex but he never goes all the way in he always pulles out we had sex before I had my last period it as a little late like day or two and it ended up to be shorter and lighter, we were still having sex after and now I'm due for my next period I have been having a cramping pain only early in the morning I've had this for about a week or so and I would get a pain in my stomach of discomfort and like I need to burp or puke but nothing happens I have been under a lot of stress lately so I don't know if that would have have effected my last period it never has before so what do you think is this a sing of pregnancy?