So I just went swimming in a lake this weekend, was 7 degrees (Celsius) out, not sure about the water temp but was pretty cold, I put my wetsuit on and go out but my throat, hands and feet get numb. I push forward and swim about 1k and I get out cause I can't take the cold anymore and decide to do a short run... to find out I can't run anymore. Like severe asthma signs and symptoms, throat is tight, lungs feel small and I can't even run 500m without blowing wind. I've never had asthma before but figure it might have been triggered by the cold? My girlfriend has a pump so we try hers but nothing.

2 days after, I still can't run around the block without getting winded. I have no other signs and symptoms and I feel fine when I don't exercise.

What's going on?