Are Antacid Fruit Chews Safe During Pregnancy?

Treasure • Mother to Greyson 💙Aug 2 17 and Gabriel 10 26 19 💙

I am 13 weeks pregnant with my second and I'm starting to get really bad heartburn. I can't remember what is safe to take to relieve it during pregnancy. I have the off brand Antacid Fruit Chews. It says they are like the Alka Seltzer chews and the active ingredient is 750 mg of Calcium Carbonate. Does anyone know if it is safe for me to take them without affecting the Baby?