Im 33 years old. Me and my boyfriend had been trying to conceive for about 3 months. July 28 we had unprotected sex which happens to be the first day of my fertility window based on the fertilty calendar I have been tracking. We had sex too on the 25th of July. By the way my last period first was last july 16 and lasted for about 2 days(heavy) 3 days (spotting).... Now im suffering an abdominal cramps.... Can you please educate me on this. last pupsmear was May 28, 2014 and the result is normal.