TMI - Really need advice

Sorry before hand, but I am seriously worried. Today, when I went to the bathroom this afternoon, I wiped the "back door" to see blood. I just went to pee and saw blood, again from the "back". I thought it might have been my period, but it ended the Friday 20th, so there's no way it could be my period. I don't know if it has anything to do with recently being sexually active Friday 27th, but I've never had anal. I'm not experiencing any pain, just kinda freaking out. I'm calling in the morning to schedule a doctor appointment, but any advice or feedback would really help!! Thank you💖