Heartburn!

I feel like I am dying of heartburn. I had heartburn with my first but this one is worse. I commonly only am getting 4hrs of sleep each night due to the pain and burning. I don't eat within 3hrs of going to bed. I try to eat real light for dinner. I am careful not to eat lots of fats. I have pillows that prop me up into almost a sitting position. If I lay down I try to lay on my left side ( of course I roll so much that doesn't last). Tums only helps for about 10min. It will get so bad I throw up and it feels like I am puking battery acid. Anyone else dealing with this? Or have had to deal with it in the past? Any good remedies? I need to be able to get some sleep!