Hi. I had foot surgery Dec 31, 2013. A non cancerous wart was removed. The stitches were removed about 2 weeks later. i developed a staph infection, and was prescribed sulfamethoxazole-tmf ds tablet. i have taken the prescription for more then 3 weeks now, and altho it has cleared up somewhat, the would is still not healed(still scabbing), and I only have 1 tablet yet. Should I ask my doctor to renew the subscription ?