Heartburn! Anything to relieve this?

Silvia • Mother of three beautiful boys! Currently pregnant with my fourth and last baby! So excited! Love my hubby! I couldn't ask for anything else in life! God has made everything possible!
So I am 16 weeks, and I've been getting these heartburns so bad. Anything I eat or drink is painful, because they come so uninvited. I've been drinking plenty of water and avoiding acidic drinks and spicy food. Anything I can do? I feel it in my throat ready to erupt!