I had my period on April 13 and it lasted 2 days. I'm on the birth control implanon. Me and my boyfriend had unprotected sex twice in one night on the 22. I slept with his cum still inside me. For about a few days now, I'm bloated, having strange cravings, having to per a lot more, I'm Moody, and I'm having small cramp like "pains" in my lower abdomen, but just on my left side. My period isn't regular so I can't tell when my next period will be or if I'll even have one this month, because I tend to miss a month sometimes. Could I be pregnant?