your symptoms suggest you are under lot of stress.better to apply for leave for 5days and start with Bcomplex tablets like supradyn one tablet daily morning after breakfast.try to eat easily digestible food like curd rice,idly or bread with milk in small amounts but more frequency.start some form of exercise like yoga or walking atleast 30min a day.along with some antiacid medication like sucralfate you can take mild pain killer like paracetamol when aches are more severe.if these measures are not helpful you need to consult qualified physician.