Sooo last night, I had sex with my boo.

We used protection. Before him,, I hadn't had sex in 6 months. But, when he finished, blood was everywhere on the condom. I freaked out! Never had that happened. Hadn't bleed since I saw that, but today, I'm cramping n lower abdominal pain. My period is due in 3 days. Should I be worried about bleeding last night?!