I have a nasty crack in one nipple that I got in the 1st 24 hours after dd was born through lolling around in hospital bed instead of sitting properly. She's now 4 weeks old and while it hasn't got any worse there's no signs of it healing. bloody hurts when she's latching on but feels fine when she's feeding. I use lansinoh cream after every feed, after shower etc. Will it just sort itself out or is there anything else I can do?