Two nights I woke up at 4am with really bad heartburn. I took tums and walked around the house. It hurt so bad. I didn't eat anything spicy or drink anything such as soda before bed. it finally went away a few hours after. Last night I had it again even worse. I did the same thing I did the night before but it didn't work. It is 3pm right now and I still have heartburn. Is there anything I can do to get rid of it? It is so painful.