Hi there, if you call your GP they will see you about this.  I had a mole on my breast that turned scabby and she saw me immediately, examined it with a small instrument that magnified it and told me what it was and it was cancerous. No one else can help as they can't see what you have and we're just normal people dealing with problems of our own.  Good luck and it will soon be Monday so make that call.  Carol