Shortness of breath. With my gp doctor.

Having shortness of breath which is constant through out the day now a days and very noticeable at night time especially before sleeping. Sometimes I caught cramp on my chest while breathing very hard. I do excercise minimum 3 days a week ( high intensity for an hour such as yoga and Zumba) though that time also I run out of breath and always get cramp / stich on my chest but ignore thinking it's normal. Around 10 years ago I was detected asthma ( heavy coughing and sneezing especially early morning and night ) my doctor said it's asthma due to dust / pollution and was using cipla pump . In between I went to abroad for 3 years and I did not show any coughing or sneezing symptoms and now stopped using the pump. However now I get shortness of breath and feel tight on my chest sometimes I get cramp ( being back to India). This i belive makes me feel fatigue, tired and puts me in discomfort. So now I am confused what should I get checked for and should I start with my GP Doctor.