Exercising with asthma?

Hello! I have allergy induced asthma, that primarily flares up in the fall. Normally I don't notice symptom's until early to mid October, but this year I am experiencing it already....have been for a couple of days now. Generally I see my doctor in Oct. and he assess my condition, and determines what medications I need at the time. I tried to get into my doctor this week, but the earliest I can see him is Monday of next week. I do have my 1 inhaler, that I take twice daily, but have no re-fills of my rescue inhaler. I have also started my allergy medication.

My question is, does anyone know of any exercises I can do that would be easier until I get to see my doctor on Monday? I would like to exercise, since I have made a commitment to myself and my family that I am going to change my lifestyles. Prior to joining MFP I led a very sedentary life, and I want to change that. I know Monday is not far away, and I could just wait until I see my doctor, but I am afraid I will fall into old habits if I do no exercise until then. Any advice would be greatly appreciated. Thanks so much everyone....and best of luck on your journeys.