Could Contact With Semen On A Peeled Finger Joint Cause An Infection?

Hi doctor I had a sexual encounter where the guy cummed on my hand. The when I washed my hands I noticed a tiny peel on the joint of my finger probably due to using it to push the elevator s button. It is reddish under the tiny peeled skin. I think the sperm touched that part of my finger... I am now having anxiety about the possibility of infection...