Hi, I Lost My Virginity Not Last Night, The Night

Hi, I lost my virginity not last night, the night before. We didn't use a condom but I don't honk he came in me or at all even. Not sure.
But now I'm sore and getting light red and brown spotting or discharge. I should have been getting my period within the next few days and have taken the pill.
What do you reckon? Is the blood just from losing my v or am I getting my period? Don't want to pregnant