27, Female, No bad medical history

I’ve always been healthy and every time I go to doctors they always tell me I’m healthy. I’ve never had surgery or anything worse than a fever.

I have been a vegetarian for 2 years. I take multi vitamins, iron supplements and B12.

I rarely exercise or move around much, but lately I try to exercise little by little.

Lately I would get random coughs about once or twice a week but I’m not sick. Also lately these past few days my nose is clogged but its not running. My breathing has become shallow that I have a hard time falling asleep. I fell asleep a few hours ago for a few mins then woke up because I felt myself pausing on my breath then breathing again. These have not happened to me before. So is it from lack of exercise or something is wrong with me?

Also I had my blood checked last month and they said I’m healthy