Go and see your doctor, go on go on go on.
I was diagnosed with asthma 5 or 6 years ago. I've had a lifetime of eczema, hayfever and other allergies, and doctors were always surprised I didn't have asthma as well, because they tend to go together.
Mine is triggered by cigarette smoke, cold damp weather (not that we get much of that in Edinburgh
), rabbit fur (all animals to some degree but I'm really bad with rabbits), some wines, having a cold, and any of those factors combined with exercise. It's usually nothing more than a bit of wheezing and I can't remember the last time I used my inhaler, but now and again it gets worse and I spend nights unable to sleep because I can't stop coughing.
I've just realised that saying I'm really bad with rabbits is going to attract some comment. I'm curious as to what they'll be, so I'm not going to rephrase.