You’ll need a swab taken and antibiotics, as Lisa said please call the nurse, maybe put a cotton pad over the area if you don’t have any sterile dressings in and wear a sports bra again until you see the nurse. You can go to your own gp first thing too if you’re too far away from the MYA clinic. Don’t panic, I’m sure it’s just a minor infection starting in the incision which may have opened very slightly in one small area. X