Completely gassed with short burst of exercise

Anyone completely gassed and out of breath after just quitting after small exertions of exercise?

Short moderate jogging for like 30 seconds playing soccer with my kid and I felt like I couldnt breathe....

I'm 38male 240 lbs. Have had an office job for 2 years and move very little as I have a bad back...

Afraid my heart has been affected with 15 years of daily drinking