Last night, I got an handjob frlm a man. During the whole process, he did it to both of us and his precum(maybe some semen) were covered on my penis. Maybe a bit rough. I did felt a little discomfort at that moment but not much. And today, I noticed there is a slight molting of the urethral opening of the glans, with some red skin. Is there any chances I could get hiv from this? Should I take any blocking measures now?