See an allergist and get allergy testing done

If you're in the US, definitely get a referral to an allergist from your PCP.

Also check for molds around you- do you usually have allergies indoor or outdoor? When does it trigger ?

Do hydrotherapy colonics

I went to a allergist , I actually went for food allergy which were negative but I found by default I have a lot allergist to environmental , animals and dust mite. It makes sense now why most winter I’ve always gotten terrible sinus infections for wks at a time. My allergist are bad so I’m on injections and daily allergy meds. They also diagnosed me asthma and I have Inhalers and Nose spray.

Also clean your cloths in hot water , my allergist told since I’m allergic to dust mite it’s unavoidable in homes . I clean often bc of it . Remember that stuff can be in curtains vents and so on . I don’t even have curtains bc mine so bad . Hope this helps