Bleeding gums? Wisdom tooth?

So I was in the bathroom getting ready for bed and looked in the mirror and seen by my one tooth it was bleeding at my gums? I haven’t brushed my teeth yet. So it’s not from that. It is just out of nowhere? Is this normal? Also I have a wisdom tooth coming in on the top could it be from that? Idk I’m just a little worried right now as this has never happened before..

*its kinda hard to see in the pic*