I need help!

My boyfriend and I have been having protected sex. We recently had sex and he took off the condom to try different things. The day after we had sex I felt lower abdominal pain. I asked a close friend why. She said I could be pregnant because thats what happened to her. Am i pregnant? What do you think? My last period was April 9th NOTE: I do not have any infections. I have checked so I am all good there.