I feel like something is stuck in my throat i keep burping and im already on 40mg prilosec.

GERD: Sound like having severe reflux, you might be having aerophagia that is swallowing air, that usually happens with anxiety, Is that a possibility with you?. You can also try a H2 blocker like zantac (ranitidine) or Pepcid at night in addition to Prilosec in the morning, if you still have the problem see a Gastroenterologist for endoscopy and PH monitoring studies that might shed more light into your problem.