The Left Calf Of My Leg Itches So Badly That

The left calf of my leg itches so badly that I could scratch it to the bone. I a PA yesterday who said I had cellulitis and prescribed SMZ-TMP DS 1 tablet every 12 hours for ten days. I am fully aware that I have not been on the medication long enough to see any benefit. I think the problem is getting worse. Should I give the medicine a few more days or do I need to see a physician sooner. Email address is
as follows: YYYY@YYYY