My baby's a few months old and her BCG reaction is looking rather ugly. Initially a bump, then looked like a dark bruise, now is even more raised and kind of dark purple. It doesn't seem to bother her if I touch it (gently, of course!!) I had it checked by a midwife last week who said it was fine, but it looks worse now. All I've read says not to touch it, and not to cover it even if it bursts. Any advice?