Should you be concerned if you had a one night stand with someone and didn't use a condom?

went out with friends, met a guy. Hangout with him for the rest of the night in his room. Where we had sex, but he didn't have a condom and neither did I. But he was so hot, so I let him continue. Then the part where the condom is most needed is when everyone starts to cum. So he came inside me. This guy I have just met. I showered and pee-pee and other stuff once I got back to my room.

Is there is else I should do? This is my first time having one of these. So I'm Completely Lost. Please Help.

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