What Is The Treatment For Shoulder Pain?

I always get out of breath whilst running, even if it's for a short distance e.g down a short road. Occationally when doing athletics in P.E with school my shoulder starts aching as well as my lack of breath. My mum has asthma I think but when I mention this to her she says "I doubt you have it" I have also used my friend's inhaler once when out of breath in P.E and it helped a lot. Help me please?