It would help if you were a little more specific about your allergies (what triggers them and at what time of year), and whether you are referring to environmental allergies or also medication allergies.
I think you are overmedicating and perhaps for the wrong things. If your ears are clogged, and if that's not a usual allergy symptom, then you probably have a cold. If your throat hurts, it could be just irritation from the coughing but it could also be a symptom of the virus or perhaps a bacterial infection (e.g. strep).
Dryness is a huge factor in mucus membrane irritation and of course it's much worse in the winter. Humidification can help and it's unlikely that you can humidify so much in the winter that you cause mold growth which causes allergy symptoms in some people. It might be worth checking, however, to see if you have a mold problem elsewhere in the house - there are test kits you can get at the hardware store and send off for analysis. Key areas for investigation are bathrooms especially if there is a way for water to get into the cracks around the tub/shower area and grow mold in the walls. You can use a simple saline spray available over the counter ("Ocean" is one brand but there are store brands as well - they're basically salt water and safe.) If your doctor has given you a prescription spray to reduce the swelling in the nasal passages, that can cause a rebound effect when it wears off so it may not be effective.
You're also exhausted which makes symptoms worse (cold, infection or allergy) and recovery more difficult.
I think you have too many different medications and also that you are trying to get immediate relief from either a viral infection or an allergy - but the immune system doesn't work like that. It takes time to recover when you are sick, and there's an old adage that it takes 7 days to get over a cold if you take medication, and a week if you don't!
It takes time to boost your immune system (sometimes a few months) but thereafter, if you've done it properly, you can be almost symptom-free. I work in this field, and I got rid of my colds, allergies and chronic bronchitis about 6 years ago. It took 3 months but that was the end of it and I haven't been to the doctor since. We had some really bad spring allergy seasons with everyone complaining about pollen, but I sailed through without any prescription or over-the-counter meds.
I also do a lot of education in this area and I can tell you the science of immune system support over the past 30 years has been really helped by the emerging science of epigenetics. There's one discovery of a superfood that has been proven to work in the area of helping the body recover and right itself, with benefits in many areas. Knowing this, we can safely enhance the immune system benefits we already had, and do so much for prevention. For many people, it's preferable to supplement the diet with something that has no warning labels (like medications and most supplements/vitamins) but whose manufacture is still overseen by the FDA. If you can prevent health problems and allergies, it's so much easier than playing "medication roulette" like so many - with the problems you're now experiencing.