Yeast infection!!

So I’m 99% sure I have a yeast infection. I had sex with my boyfriend last week and about two days ago, my vagina started itching. It’s been swollen and itchy but there’s been no burning sensation when I pee. I’m not really sure where I even got the infection from. The only thing I can think of is we used a new brand of condom??

Anyway, any advice for me? what is the best thing to do?

I started Monistat tonight and wow does it make it itch 10 times more