Got armbarred, dent in bicep

got armbarred sat, now there is a weird dent in bicep when i tense. it doesnt hurt much (kind of like a dull bruise type pain) but it looks weird. Can anyone please help me out as i have my 1st pro match in two weeks. i have messed up my elbow before but i have never come across this

Best to see a doctor for that.

Without seeing it sounds like you may have ruptured a bicep head, at a minimum pulled a muscle

I did this once, before I started training. I don't even remember how I did it, but it looked like I had rolled the car window up on my bicep. It healed up in a few weeks with no recurance. It was freaky looking for a while though.