Hello Ma am I had gone through your question very diligently and I will try to help you out in best possible way this might be signs of imminent periods with acid peptic disease due to stomach hyperacidity. Apart from drugs stomach gas , bloating or Acid reflux also needs certain dietary and life style modifications like Avoid fatty fried spicy and junk food or carbonated drinks Have lots of fresh fruits and vegetables You can take curd, cold milk or fruit juices You should not stay hungry, have something to eat at frequent intervals because hunger increase acid production You can liquid paraffin or lactulose for constipation Avoid smoking and alcohol relaxation exercises to allay anxiety and stress. Don t lie down immediately after earing something If you can provide me more details like your age and presence of any other metabolic illness like diabetes or thyroid and liver disease , I will be able etc help you better In my opinion you should consult a gastroenterologist for an endoscopy and X ray chest to rule out hiatus hernia Hope this answers your question Thanks and regards