How do you get rid of heartburn?

We were invited by one of my sister-in-law's for Easter dinner at their house. We got there half hour early before the dinner started. Their house is very clean and spotless. They have a pretty house too. We were watching hockey while dinner is not yet ready. Everybody came and dinner was served in no time. Foods are very delicious. I had ham and potatoes. I had the cherry pie and vanilla ice cream for dessert. It was a great dinner. I am not sure what gives me heartburn. It is not a good feeling. It hurts so bad. I took Tums already but the pain is still here. This will be a long night for me. How do you get rid of the heartburn. Any ideas are very much welcome.