Anyone have or ever had heart burn as a PMS symptom or just pregnancy related?? I am on CD 23 and…

Anyone have or ever had heart burn as a PMS symptom or just pregnancy related?? I am on CD 23 and I've been having off and on PMS or pregnancy symptoms we all know they mimic each other. But i tarted getting heart burn off and on and I've NEVER got heartburn except when I was pregnant in the 3rd trimester with baby #1. No we are not trying for #3. I doubt I'm pregnant honestly cause we are careful but this heartburn is throwing me off. IF it is anything I would have had to ovulated early I guess.. but like i said we not trying and I doubt I am pregnant just more curious than anything.