August 14th I missed a step while walking and fell. I had a lot of pain, went to urgent care and was told it was bruised (possibly fractured) rib(s). It gradually got better but around September 14th I started having a difficult to describe pain/discomfort in the center of my chest, near the sternum area. Back to the doctor and had x-rays taken. X-rays all looked fine. I was told it was from the fall and it could take another month or two to heal. I m just not feeling that this is fall related. It seems totally different.
From August once you have recovered from pain it will not start again in September suddenly until and unless you have not damaged it again.  Here your pain could be related to an acidity also here actually after food if you have habit of going to bed or sleeping, the acid gas and juice of digestive system can travel up and give pressure on heart.  And will start paining. But if you have chest pain with few steps walk as well with breathing difficulty then it could be related to your heart.  In that case you need to do electrocardiogram as well treadmill test and then further guideline will be given by your cardiac doctor. Take care