Pregnant or Late Period?

Hey gals, so I usually get my period at the end of the month, and I had sex for the first time on June 10th. Every time I’ve had sex my boyfriend has used a condom, but I’m nervous that something may have happened. He says it didn’t break as far as he knew, which concerns me. I’ve had light cramps, very sore breasts for about a week, as well as crying spells and a headache or two. I’m really hoping my period is just late because sometimes I don’t know when it will show up, but now that I’m having sex I’m extra worried. Please help!