ever sustained a mild head laceration but nearly fatally bled out because of it?

Yeah I had one. Didn't seem that bad because most of the bleeding was internal and I couldn't see it. I basically developed symptoms similar to a stroke and blacked out as I lost too much blood and my brain became starved for oxygen. Thankfully my family is highly aware of FAST and called 911. Dunno exactly how they realized it wasn't a stroke, but they were able to get me into emergency surgery and seal the cut before I died.

Head injuries tend to bleed profusely due to the location.
They can often look much worse than they are.
If you were on blood thinners and couldn't stop the bleeding, you might eventually bleed out after a few days.

rnaybe you should go to the er if youre having problerns like this