Oral sex

Morning! Last night I had casual sex with a guy, and I never do oral sex to anyone (not much into it) but this time I did.

I’d like to know if I can get some STI by just sucking dick. I mean, he didn’t cum in my mouth, I just sucked it for less than 5 minutes. Besides, it looked pretty clean and didn’t have any weird smell.

But idk, help me out pls love u thanks