I have symptoms during exercise in my arms and legs of very bad cramping, ache , heaviness, fatigue and shortness of breath. is it possible that blood isnt getting to my muscles fast enough during exercise and thats causing symptoms?

Yes. I would suggest that you have a complete evaluation to pinpoint the reason and options for improvement.

Might consider a metabolic muscle disease, electrolyte imbalance, dehydration, etc., as seriously doubt vascular insufficiency. Regardless, see a physician, have a full evaluation, and perhaps see subsequent specialists. We can perhaps help guide this via a virtual consult here at HT (www.connect@healthtap.com)