Joan Jewel, I have been there. I have had severe allergies and chronic asthma all my life. I have lived long enough to remember a time when there were no allergists and antihistamines were fairly new.
I am now 58 and have severe COPD yet never smoked. Take it seriously. Chronic asthma can jack up your long term health. I retired at 50 due to health complications related to airborne allergies and chronic asthma. I am now on oxygen 24x7.
I have spent a lifetime searching for something that might help.
I have found a few herbs that have helped; gaduchi, nettle, and quercetin. Fish oil also helps with asthma. If you take vitamin E only take alpha. Keep up on your b vitamins particularly b1,5,6, and 12. I just take a complex.
I do encourage you to research cytokines and try to reduce your Th2 and th17. Th means T-Helper Cells. The sight selfhacked is a good place to start. There are things you can do to reduce inflammatory cytokines.
I would suggest that for any supplement you take to do a google search. Put the supplement name in and th1 th2. Many websites say this works or that works. But if you follow them without knowing you may be elevating th2 and reducing th1. Thus supplements can work against one another.
A couple other supplements I take for asthma inflammation is rhumanni and schizandra.
I wish I would have taken this much more seriousely when I was in my twenties and thirties.
I also highly suggest that you have a blood test done for Celiac disease. It is an autoimmune disease that is highly related to asthma. It is the one where you have to go wheat/gluten free. I was diagnosed at 54 years old. I blame it for some of my allergy/asthma issues. You might also want to be tested for Alpha-a Antitrypsin which is also related to asthma. Your general practitioner will probably not be very knowledgeable of either. Push them. They are a high paid consultant. Make sure they work for you rather than you working for someone else and just giving them your hard earned money.