I Recently Had Gastric Problem Started. I Am Having Regular

I recently had Gastric problem started. I am having regular heart burn after this problem started. I went to an ER and they reported every thing is normal with my heart. Later after observation I found its due to Gastric issue. After treatment for 2 weeks and more intake of water this problem has subsidized but today I felt like a kind of pull in the center of the chest when i am sleeping after which my heartburn has further reduced but I am not sure if that is anything related to heart and should I get myself checked up.
Please suggest.