Where is the infection?
What are your symptoms?
What antibiotics have you been taking? How long was each course?
How is the area now?
The signs of improvement would be reduction in size, heat and return to normal color.
However the antibiotics for MRSA need to be taXXXXX XXXXX term and the areas should be swabbed and cultured to check that the bacteria is sensitive to the current antibiotic. If it is MRSA then you may need intravenous antibiotics depending if the infection gets into the bloodstream.