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The description does not suggest heart.
Yet it is advisable to have it excluded...
Most reasonable and least expensive approach may be to for TMT (Treadmill Exercise EKG Test).
You must start reducing now! You are young, intelligent and informed... You have the motivation - you want to see the son through the college.. You know and that is the first step. It helps the heart, hiatus hernia
and several other things too.
Wishing speedy recovery