Girlfriend thinks she has a uti so she's been taking azos for a couple of days. We had unprotected sex yesterday and I want to get plan be to be safe, but we don't know if it is safe to even mix both of them at the same time. So can I go and get the plan b? She's 18 turning 19 at the end of the month

Now why would you have unprotected sex and then expect her to take plan B? Next time wrap it unless you're deathly sure that your partner is protected as well. IE, hormonal birthcontrol or IUD.

I think a visit to your doctor might be best. I don't know what the possible drug interactions could be. Most of the time there's nothing, but there could be something and I am not willing to take that chance. There should be a walk in clinic or something like that you can go to. Even a pharmacist could know.