I had my newborn in bed with me nursing and had my head turned. i turned around and she was screaming and bright red. can she get hypoxia from breastfeeding? im a very worried momma?

You don't get bright red from hypoxia & you don't get it breastfeeding.

Always observe the baby while feeding. Sitting in a chair is preferable, since you may fall asleep. The change in the baby's coloration should be evaluated. Watch for signs of poor feeding, cough and nasal discharge. Keep your vaccinations current, including COVID 19 vaccination. A virtual consultation with Health tap is available

While sleeping in the same bed with your infant is common it is not completely safe. Every year babies die in their parents' bed after being smothered by a sleeping adult. A baby screaming and "bright red" sounds like she was unhappy about something, not hypoxemic. Hypoxemic babies are either pale or blue. Feeding your baby while sleeping is convenient but in the US most babies sleep in cribs.