My incision has been infected for 2 weeks and I've been on 2 different antibiotics and it’s getting worse. What next? (photos)

Hi my wound became open at the end of my incision and has been infected for 2 weeks now. The infection has spread further along the wound and my whole boob is in pain but there is no redness or swelling. I’m running a high temperature and feeling faint but I was told this is normal for an infection and I should just rest but I have now finished my course and I’m still feeling like this. What should I do? I feel really worried and don’t feel like my nurses or surgeon are taking me seriously.