Pregnancy Symptoms?

With my first pregnancy (July 2021) I had no symptoms during the first trimester. But currently my period is due the 8th of November. Monday and Tuesday of this week I had a very tight chest and today the tightness has gone to my stomach. And I’ve been nonstop burping. Could this be pregnancy heartburn?? I’ve never had heart burn.

Please let me know if you have had this happen to you. TIA