I am currently breastfeeding, struggling with a milk blister on and off. area around nipple is a little red, but not much. now i have more symptoms: fatigue body aches mild fever (37.1 c, usual temp 36.5) mild nausea slight postnasal drip?

Redness of the skin may be associated with a Staph infection. Monitor temperature and discuss nasal saline spray with your PCP. If there is a temperature elevation, consider further testing. Keep the skin clean and dry, discuss topical versus oral antibiotics with your PCP. Watch for swelling, redness, drainage and fever. Wear a mask and wash hands before handling the baby.