Hi I Keep Waking Up Daily And Burping A Lot

Hi I keep waking up daily and burping a lot and it smells like rotten eggs and my stomach feels bloated and I'm also gassy and I have not been able to eat much lately and I've lost some weight and 3 times over the past couple weeks I've gotten diarrea for 24 hours each time. The diarrea has stopped but the burping and egg taste is continuing. Would you happen to know what may be causing this?