I'm just wondering how proactive I need to be for mastitis prevention... my baby is 8 weeks old tomorrow and didn't feed much yesterday after a few evenings in a row of cluster feeding. Last night and this morning I've felt engorged and had a large lump near my nipple, I've been massaging when she's been feeding but it's not totally gone away - at what point do I need to contact the GP for antibiotics or is it only when the fever etc. kicks in?