bleeding next day after intercourse?

I had sex 3 times last night (big night for me i know lol) and on the third round i was starting to feel sore but it was mostly fine.

the next morning (today) i woke up to the feeling of period cramps and a teaspoon of blood in my panties. im not supposed to get my period for another 15 days. is light bleeding normal/okay after a night like this?