Sounds similar to what has been happening in my heart area but not any particular time at all.
Perhaps my heart is having some sort of awakening? Or, maybe passages working better then before? Sort of how my lungs have more capacity for air now, Do yours?
I can breathe in as deep as a mile feeling.
SO PERHAPS....maybe my heart has more capacity? (I am hoping more capacity for love. Maybe I can fall in love again with this global warming stimulating in my heart. :-D)
MAYBE,,, your stomach has more capacity too?
I am not certain of the poetic attributes of the stomach, belly but I am sure there are many.
I would think warming is good, burning would be bad.
My heart rate is normal and blood pressure is very good so I have not been worried.