Itching/Burning, and Extra Discharge

So this is probably a really dumb question. I started feeling really bad vaginal itching after I took a shower a couple hours ago, and it has some burning when I pee. I’m also having like a shit ton more discharge (like, abnormally more). I’ve been having some stomach pain and pelvic pain, but I assume it’s no big deal. Should I be concerned? Should I call OB? Only posting anonymously because I feel like it’s a dumb question.

Oh, definitely need to mention I’m on an antibiotic for bacterial vaginosis, and have like 3 days left of that.