blood in stool/when i wipe.... HELP!

So for the past month or so when i go to the bathroom (number 2) i’ll go to wipe there’s blood. sometimes quite a bit. and recently i’ve become very constipated which is not normal for me, I usually go normally everyday. and tonight I was about to have anal with my bf & he noticed I was bleeding a little bit... i’m only 20 so i’m kinda scared. I have no idea what this could be. suggestions????? 🤧