I feel like it’s more in the middle of. The day then anything mostly never in the morning I just completely cut out coffee as of last week after over 20 years the doctor said it helped her! It don’t ever wake me out of my sleep but I have suffered with heartburn since my teens that would always wake me!!! It’s def not the same feeling as heartburn at this point I’d take that suffering just because I knew exactly what it was lol... I feel like that’s where it started I had 2 horrible days in a row of heartburn last month then the next day I was feeling the chest pain and it hasn’t stopped since ! Do you take anything to sleep ?