Spotting after loosing virginity = pregnancy ??

So I lost my virginity on Saturday and I bled during and had abit of spotting but I figured that was normal . About a day or two after I bled like so much just for one day and bearing in mind my period is due about thurs/Friday this week I thought it had come early ? However it stopped instantly like the bleeding is gone it only lasted one day but it was the amount of a period . Went online and read various articles but you know how you can diagnose yourself with anything online ! Well is this one of the subtle but early signs of pregnancy or ?

We used protection but at the ending I finished him off and there’s a chance I could of been in contact with some semen somehow as I was on top of him kind of . Idk lemme know !