Hello, 5 days ago, I gave a hand job to someone I'd just met days earlier. He ejaculated and some of it got on my hand. I used a towel & hand sanitizer to "wash" my hands & then properly washed them when I got home an hour later. I did not touch myself sexually or my mouth/eyes/nose while I had semen on my hand. Is there any chance I could have received an STD through that action? I feel physically ill over the thought. I have no symptoms. Thank you