Had sex last night but…

I had sex with this guy I’ve been talking to for the first time last night. No condoms used… I know smh I’m so dumb bro. And also he came inside me. I’m on bc. But anyways, today when I was in the shower I realized there’s a strange odor coming from my vagina. And I’m like !!! I’m looking online to get free std testing and what not but can other things cause this too other than stds? Like idk an imbalance in my ph? Yeast infection? Bacterial vaginosis? Someone please help I’m stressing myself out omg