Dear guys
Yesterday I did mutual handjob with a man, who hasn't tested STDs before. He did handjob by himself and then he performed handjob on me. I am not sure whether there is some his pre-cum on his hand while giving me handjob. But I did have precum on my penis. I am sure that he touched my pre-cum. When he did the handjob on me, I intentionally checked his penis, it was dry. I am not sure whether this is a body fluid exchange that could put me into the risk of catching HIV.
Two days before I met him, I did handjob by myself, which caused a little bit red on my penis, there is red on my penis but no bleeding while he gave me handjob.
I am very worried about whether my precum would mix his precum and the exchanged body fluid went through my urethra.
I am very worried, could you please help me?