My wife ran into the same issue a few trips ago, and called her OB/GYN back home. The Doc called in the required scripts to the pharmacy in Maho, and my wife had it in her hands about 10 minutes later. Was feeling better the same day. There's an urgent care across the courtyard from Maho Pharmacy, but they have very limited weekend hours. I tweaked my back carrying a lady up the stairs at Cupecoy after she'd taken a nasty fall and we both ended up there, and they did a great job patching us both up, pain meds needed, etc. We hope your wife finds a solution that works quickly.