Don't worry. I think they run resistance test before they give it to you. We all worry about "what if the meds don't work". I've read about at least one multi- drug resistant case. I think it was in France. It was in Poz magazine.

As long as you're undetectable you can't transmit. I'd wait till that viral load goes down to undetectable before having unprotected sex.🙂

Probably easy. Is the neg person on prep?