Hi ,Welcome to HCM ,
your Gastric problem difficult to control untill and unless you adopt healthy life style modification ,
as you underwent
bypass surgery you need to take above all medicine regularly ,
please take medicine in time ,
do some life style changes like
eat bland diet , eat more of fresh fruit , fresh green leafy vegetables ,
restrict salt intake ,
avoid spicy food ,
avoid non veg and junk food ,
do not take heavy meal ,
take small frequent meals ,
stay relax ,
take proper sleep ,
avoid alcohol use if you are taking ,
avoid immediate sleep after food ,
do not use any form of tobacco ,
do
stress relaxing yogas ,
avoid too spicy , too
cold , too hot food ,
i think life style changes will help you lot to control your gastric problem ,
take care