<s>[INST] I have had a burning sensation (not really "pain") in my lower chest for the past two days. I wouldnt say it comes and goes, but moreso that I notice it more when not distrated by other activities.  Sometimes it feels like its more one side then the other. I am a 36 year old female who is overweight, dont smoke.  I have had reflux in the past, but seemed higher near throat.  Also the discomfort lessens a bit when I push my chest outward to stretch, often hearing a cracking.  I tend to sleep on my left side and wonder if it could be related or if its more serious.  Thanks [/INST] Thanks for your question on Health Care Magic. I can understand your concern. In my opinion, you are mostly having GERD (gastroesophageal reflux disease) and related symptoms. GERD is due to laxity of gastroesophageal sphincter. Because of this the acid of the stomach tends to come up in the esophagus and cause the symptoms of burning sensation in lower chest. So we should first treat GERD in your case. For this, avoid stress and tension. Avoid hot and spicy food. Avoid junk food. Avoid large meals, instead take frequent small meals. Take proton pump inhibitors and prokinetic drugs. Loose weight and stay fit and healthy. Don't worry, you will be alright with all these. This is not serious condition. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks. </s>