I was accosted and grabbed by a mugger, and we struggled and I bit him kinda hard to make him let me go. Unfortunately, I got some of his blood on my lip. I don't think I swallowed, as far as I can remember, but I'm petrified of this. I wiped the blood off after a while when I got free, but I am having nightmares about HIV now. Is getting blood on my lower lip a risk for contraction of HIV for me? Assuming he's positive? My lip had no open cuts nor any infections or sores, and was intact as far as I can remember, but I'm still scared. Is this a risk for HIV?