Hello, thanks for posting on HCM. According to what you have mentioned, it seems the wound must have got infected and the milk like substance is pus which has formed there and that is the reason for fever also. It means there might be abscesses cavity formed within the wound which might require examination whether to drain it by giving it incision or it can be left alone with only antibiotics. I would advise you to go to consult a doctor who can examine the wound and abscess cavity for whether it requires incision and drainage or can be managed with antibiotics alone. I hope I have given satisfactory answer to your query, if you still have any more query kindly write back to me and I will be happy to help. Thank you.