Baby won't nurse after scolding. What to do.

My LO is cutting 4 teeth top two and bottom two. She's been bitting me for the last 2 weeks now and each time, I tell her no with a firm voice.

Yesterday morning, she ended up bitting me and it actually startled me because the both of us were dozing. I ended up yelling at her and she balled.

I feel absolutely terrible and she isn't latching anymore.

She's 6months. Oh also. She wants to nurse but each time she gets close, she pulls back and will whine a little.n

I know she doesn't understand :/. I don't have any friends t. I don't have a pump and won't be able to purchase one until next week. I'm hoping someone could give me some advice on reassuring her somehow