Aww Shana
the wonderful woes of pregnancy.
I've had acid reflux when i was younger and it's not fun at all.. During pregnancy everything is so relaxed that your food tends to go back up especially at night when it's most relaxed. They actually do say to steer clear of spicy/acidic things that can make it worse.
I believe you can take Tums, but since your in your 3rd trimester i'm not sure though, so you'd have to ask your ob/gyn just to be on the safe side.
My Hubby also has reflux too at night, his food will go back up while he's sleeping and it basically suffocates because it was so sudden! try to sleep on a pillow if you can and elevate your head and try not to eat so close before bedtime (if that's possible during your pregnancy, cause i know for me it's not! lol)..
i hope you feel better!