Pregnant?

My boyfriend came inside of me a couple weeks ago while I was in my fertile window and ovulating. Then two days later came inside me again. I am not on birth control. I usually have some mild cramping while I ovulate. However I'm still having weird uncomfortable cramping, not painful or anything. Just different. And today I woke up and my breasts, mainly nipples, are sore. And I've been pretty moody and craving sausage, when I never eat sausage. Is there a chance u could be pregnant and having symptoms already? Or just paranoid.