16. Pregnancy.

Hey ladies. As you can see from the title. I'm 16, I'm not looking for oh you shouldn't be sexually active at this age or anything. Just some advice from older people 😪
My boyfriend and I had sex on Tuesday of this week it's not Thursday. I'm stressing out. My period is due in 12 days but that's ages away and if I'm stressed about this it's just going to be late which will scare me even more. We had unprotected sex and he pulled out on the top of my vagina. Eg. Where the hair grows. He wiped himself off and wiped me and before I could quickly get the stuff that dripped down off he shoved it back in? Stupid I know. 
But I wanted to know how long it has to be after intercourse that you can take a pregnancy test