<s>[INST] I am a right side sleeper, at times I wake up with severe pain wrapping around my back and chest. In the chest it feels like pressure. If I take an ant-acid it sooths a little bit- but the symptoms remain. If I drink ginger ale I burp and this provides some relief in pressure. The pain will continue until I finally vomit- once I do the pain and pressure subside and I am able to go back to sleep. Vomit is bile green. Any ideas as to what is going on? [/INST] Hello,I read carefully your query and understand your concern. Green or yellow vomit may indicate that you're bringing up a fluid called bile. This fluid is created by the liver and stored in your gallbladder. Bile isn't always cause for concern. So,I suggest to do an abdominal ultrasound for further evaluation. Hope my answer was helpful.If you have further queries feel free to contact me again.Kind regards! Dr.Dorina Gurabardhi General &Family Physician </s>