Itching inside vagina + burning with penetration and urination
I'm not really sure what's going on. About a week or so ago, I started experiencing some slight burning during urination, so I figured, "Okay, UTI, no problem." Then when I had sex, it burned quite a lot upon that initial penetration, but went away after a couple minutes. Trust me when I say it was not a lack of lubrication.
I kind of feel like I need to urinate more than usual, and in addition to that, vaginal penetration in general continues to burn and is actually itchy. And by "itchy," I mean on the inside. Which is odd.
There's no "cottage cheese" discharge, so I don't think it's a yeast infection. And I've always been in a monogamous relationship (no one on the side or anything), so I think I can rule out STDs, and I know my boyfriend has been faithful to me too, so that's not an issue.
I've never had the urinary issues on top of vaginal issues, and most of what I read says this is an STD. I don't see how because it honestly just started right out of the clear blue - one day I was fine, the next, it burned to pee, then I started to get itchy.
Have not taken an antibiotic lately, I'm not on the pill, am not pregnant, I don't use douches, I don't use any scented feminine hygiene items, have not had any sort of surgery or issue with my reproductive organs, there's no stinky discharge (though seems like there's a bit more than usual), I've really done nothing different in my sexual or hygiene routine to cause a problem.
I suppose it could be a yeast infection since I did have one once before that yielded no discharge - I just itched like crazy in my genital area on the outside. This inside itch is new for me, and I suppose it's also possible that I have a UTI and a vaginal infection at the same time.
Anyone know what I mean? While I have found only one source suggesting urinary issues can be caused by (severe) yeast infections, how could this get severe in the span of just a couple days?
Will it hurt me if I use an OTC yeast infection treatment and I don't have a yeast infection?