Itchy vagina...latex allergy maybe?

So me and my boyfriend of 2 years had sex on Sunday, and now my Vagina is a bit red and itchy? We used a latex condom and we were in doggy style, he came inside me.

I lost my V card in december with him, and we did use latex condoms before..I just cannot remember if it made me itch though..

Am I pregnant because I read the acidity of sperm can make an imbalance in your PH? Or allergic to latex maybe? today I am ovulating...

Just bit paranoid.

We did throw water inside the condom to test for any possible leaks and there was nothing I am just not sure what to do..I am living with my parents and still under their medical insurance.

What can this be? And can I do to make it stop itching because its killing me😱