Mouse bit his mouth!

[Pareeeee]

SO...I was feeding Boaz (my Rosy) today and I think the mouse bit inside his mouth. First of all - no, he will NOT eat frozen/thawed. I only was able to get him to eat f/t once, and that was by tricking him with a live one I was holding beside it and he struck the frozen one by accident...every time I try to feed him f/t he goes off food for months and months as if to punish me for having the audacity to offer it.

Now I THINK it bit him, anyway. It was hard to tell, he was constricting and it looked as if the blood was coming from the mouse's mouth, but I think it was trickling from Boaz's mouth into the mouse's. He didn't eat it (no surprise, he has always been a problem feeder, eating less than 20 meals a year).

Anyway, I took a look inside his mouth - opened it with the handle of a q-tip - and it looked dark around where his tongue is. It's hard to tell because his tongue is dark.

What do I do, what do I need to watch for and should I take a photo for you guys? (I don't want to stress him any more than needed)