Severe Heartburn!

Traci
I have struggled with heartburn (G.E.R.D.) since the age of 15 (now 26). Being pregnant and in my 3rd trimester, my heartburn is severely worse!! I have asked my doctor several times about what I can take. I chew tums like candy and take a 150mg acid reducer daily. I've read where some ladies take 2 of the 150mg pills a day while pregnant. Just wondering if that would be safe for me to do??!