Tim?... Sore nipples

My 5 month old daughter is doing a number on my nipples...I feed her about 4-7 times a day, usually about 20-40 minutes at a time. Lately my nipples have been hurting so bad I feel like half the time she’s just like gnawing on them but if I try to take her away she cries like she’s still eating so I don’t know what to do... any remedies for sore nipples??? It’s so bad I cringe when it’s time for the next feeding.

* btw she HATES pacifiers, always has