<s>[INST] My Husband has been having a dull ache on the left side of his stomach for the last several days. Hes felt a bit weak, even a little nausea, but it comes and goes frequently. No problems with bowel movements. This morning woke up coughing up a bit of brown phlegm.  Could this be signs of an ulcer? [/INST] Healthier are two different symptoms. Pain in the stomach and nausea are related to each other, as these symptoms are for several days and may be due to hyper acidity or gastritis or hiatus hernia (one and same thing) , diagnosis can be confirmed by upper G I endoscopy. When such symptoms present, please avoid spicy, greasy, fried foods, don't eat pizza, burger, sweets. Try raising the head of the bed of your husband about 4 inches with blocks. It might also help to avoid eating or Chat Doctor.  Also take some antacid but if there is sever pain and nausea, he may need  </s>