Am I pregnant?

On the 11th of March my boyfriend came over and we were making out. I was sitting on top of him with only my underwear when he put only his shaft up against my vagina. I’m usually very precautious and made him it it away but his tip never came in contact with my hole. After that he fingered me and then we proceeded to do 69. All of the semen ended up in my mouth and I washed my hands after to make sure none of it was on my hands and I wouldn’t touch myself by accident later on. My period is now 4 days late but we didn’t have sex. Any ideas? Maybe due to my stress? I’m having cramps as well as head aches and acne