Hi All of your symptoms are due to acid reflux. Your stress may be related to this. Be assured it is not a serious condition as it is. The lower end of food pipe called cardia remains normally closed by a string of muscles around it. It opens only when food passes down. Once food passes it closes and prevents anything going back to food pipe. In your case that cardia opens when it normally should not. This is most probably due to the stressed condition. Due to this contents of stomach including acid there spills over to food pipe. When it reaches throat it may give a bitter taste. Because of inflammation produced due to acid you feel something stuck in your throat. Cramps under your breast bone is due to strong contractions of food pipe either secondary to acid itself or nerve regulated due to your stressed situation or both. Your doctor gave you the right medicines. No problem to breastfeed with that. If your condition does not respond well the dose of medications may have to be increased Domperidone taken before food is likely to control the condition better. Try to take frequent small meals and avoid spicy food You may have to continue the medication till your stress is managed well. Usually acid reflux needs treatment for about 2 months. For management of stress, take regular exercise (such as half an hour of brisk walk daily) and meditation. If the stress is severe you may need to take the help of Psychiatrist as well. Wish you good health.