what’s gonna happen...

Al

so i’m 80% sure I have a yeast infection. i’m itchy on the inside and my vagina opening is swollen.( i’m not itchy on the outside at all just the inside) I used monistat just now, but then again i’m not 100% sure it’s a yeast infection. I could just be sore from all the sex i’ve had with my boyfriend recently. so my question is: will anything bad happen if this isn’t really a yeast infection but I still used the medicine to treat it?