nursing Strike?

Kat
Any mommas deal with this? I'm devastated right now. My baby is 5 months and teething. She screams when I try to nurse her every single time and I feel like she's not getting enough at this point. My supply is taking a hit as well as my heart. I have two other kids that this never happened with. Can anyone give me encouragement? I have a little freezer stash but I'm afraid to start formula because I know that will make it easier to just give up.