Is it ok to have oral sex at 13

no

Explanation:

55% of teens aged 13-19 had experimented with oral sex. This is a problem a couple of reasons. First, many teens engaging in oral sex are not aware of the associated STD risks such as genital herpes, genital warts, and chlamydia.

STD'S can spread and cause a lot of harm to the body.

I mean you can't get pregnant or get anyone pregnant from it. You're not hurting anyone doing it. So yeah go ahead (as long as it's with someone your age and there's consent)

the taste can vary from person to person, so although semen is generally warm and salty, there will be unique differences in flavor.

and no swallowing semen doesn’t get you pregnant

i'm pretty sure questions like these aren't allowd.   but, sure.   i can and talk : ))