🤔🤔 pls help

So I had unprotected sex a few days ago and since then I’ve just felt different. I had sex right after my period was over. I’ve had BV before and I’m so paranoid I’ll get it again or a yeast infection. Is there anyway i can prevent these or treat them at home without calling my doctor? I’ve had clear watery discharge the last two days. I’m also on birth control if that means anything.