I have a question about my husband. He is 37 yrs old.

For about the past two months he has been having trouble with the circulation in his legs from the knees down. He also doesn't seem to have as much stamina. He was playing football with our son and seemed to get winded much quicker than usual. He is probably about 25 lbs overweight but has since lost about 10 lbs of that and has started trying to watch what he eats but of course not really exercising because of the other issue I mentioned. This has been very sudden. He was working strenuously around mid january.
He had 4 kidney stones around valentines day and we are dating the onset of the other symptoms about a week before that.

We went to the Dr. This past monday, his blood pressure was 138/72. They did a blood workup, we got the results today they said every thing looked "very good". His triglycerides were slightly elevated they said but nothing to worry about.
Our Dr. Told him that he shouldn't expect to be able to keep up with an 11 yr old anymore. We laughed of course, but we also don't think he should expect to have that drastic a drop off in a month or month and 1/2.

We tend to get concerned due to the fact that he has major heart disease on both sides of his family. His father had his first heart attack at 38 and has already had open heart surgery.

Is is possible that there would be heart or other issues even though all of these other tests came back good?

Thanks in advance for your help. :d