TMI, Spotting after intercourse

My period was supposed to start yesterday... And its not here. Last night my boyfriend and I had intercourse, I went to the bathroom to pee as I'm supposed to 😂.... And then, I wipe... There is a mix of pink and brown blood (like my period is stopping type of coloring)... So, I wiped again and it was a few tiny dots of blood. I woke up this morning thinking I'll be having blood everywhere, but nope. Still not on my period.. any ideas what's going on?