Hi and welcome to Healthcaremagic. I understand your concerns and I will try to help you as much as I can. This may be caused by too excessive Miralax intake and you should stop it temporarily. Also, there may be some gastritis component also so I suggest to take pantoprasol, have easier diet and see will it improve. If not, you should do gastroenterologic work up Also change your diet: eat smaller meals but more frequently, avoid fried and spicy food, take menta tea, avoid alcohol and coffee, eat probiotics and milk products, boiled food and vegetables. Also, there are medications such as Flobian,Magnesium oxide which may relieve such symptoms of this continue. I hope I have answered you query. If you have any further questions you can contact us in every time.