Hello~I would certainly see your GP again, you probably need a different antibiotic as the one that was given to you did not do the job.
Hello and welcome to the forum. Please call your doctor. While you may not need IV antibiotics, you may need a different oral antibiotic than you took. You are showing signs of infection continuing. https://www.webmd.com/skin-problems-and-treatments/skin-infection-signs#1 Please let us know how you are doing.