Okay so I am on the pill and have been for a year me and my ex boyfriend had unprotected sex two days before my fertile window is supposed to be and I was still on my period. He pulled out but lately I've been kinda constipated and my boobs have gotten bigger and I have cramps. It started a week ago and idk I should be fine right? I take my pill almost same time everyday and only ever miss days towards the end of the pack? Any advice?