[Maria]

As mentioned it could be that unless it's broad spectrum and even if it is doesn't mean it's specific for whatever bacterial infection you have going on or another type of bacterial infection that can occur that is resistant to the medication you are using.

I take it you're not running a low grade fever and there is no oozing foul smelling material coming from the area or increased tenderness, redness or swelling. Still the continued bleeding is not right. Fresh blood I take it.

Even with the doctor seeing you on a weekly basis things can change quickly with regard to infections so it's important that you are asking questions and that if you feel there is a significant difference or problem that you seek attention most rapidly (immediately). Too much destruction to otherwise healthy healing tissue can occur and other big problems can follow so if you're very uncomfortable with what you're seeing/feeling seek attention before scheduled appointment.

The surgeon would want to salvage things ahead of time rather than run into further complications.