Herpes or Other STD?

Hi i didnt know where to post this!

So i had sex 2 weeks ago and now I have one weird pimple on my vagina that doesnt want to go. It’s exactly like a pimple with white heads but i never had this before. I just have one and it’s a little bit painful. I dont know if it’s related but I also have a pimple on my lips... do you think it’s herpes?

Thank u!