It’s normal. Take a few nights off, ask hub to take over night feedings and rest other than pumping (if you are). We are all tired, hub just got to give and take a little on night duties. Your lack of sleep is what contributed to this on top of a crying baby which you are trying to understand. Take one step at a time.
After feeding, you can hold baby in the same position or just let baby rest on your palms slightly elevated (5-10mins) then try to start burping her again. After burping, swaddle and off all the lights, on some white noise music for baby if it helps. They may cry due to gas, you can try ridwind drops for baby or just apply some ruyee oil to help.
We have all been there, the fear of what’s upcoming and ahead for us. If you feel you need to stay away from a crying baby, see if someone else can take her for awhile while you rest and cool yourself.
Ella B