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.
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.