Heartburn 😩🔥

For the past couple of days I've been suffering from severe heartburn. It doesn't really hurt around my chest as it usually would, but my throat at times feels like it's on fire. The only relief I get is when I'm laying on my left side. I've tried tums but they don't seem to be working and I don't want to take too much. I blame myself because I did eat pizza and some spicy snacks. How can I relieve the heartburn? Is their medication you would suggest?