Orally Transmitted

I’m feeling a little stressed out I received only oral sex from a guy on 4/6. I had an OB appointment to discuss birth control and just got tested for everything while there and I was negative/non-reactive. Well a few days ago I’ve begun to feel off down there now I’m scared he could’ve given me something. I went to urgent care yesterday and I don’t have a UTI so they sent my urine off and I won’t know anything until Monday or Tuesday. The doctor tried to ease my mind tell me about a similar experience where she felt funny down there after a sexual encounter but ended up being ok. Had any of you ladies ever felt like u had an STD based off how you felt down there but it turned out not to be an STD? Also is giving oral sex the only way you could contract an STD in the throat to pass it to someone’s genital? He says I’m the only person he’s been giving oral to so I’m hoping I’m ok but at the same time men tell tales. Thanks I’m advance for any responses.