Sinus Medication Solution

My Mom is suffering from a major headache that its even affecting her jaw. She can’t eat or drink anything cold is just makes the pain worse. She went to the dentist and he saw their wasn’t anything wrong with her tooth. But she still is in major pain.

What’s the remedy of this?

Any home remedies or certain things to eat/do?

besides using an allergy medicine what is the best homeopathic way to treat excess mucas and congestion? I have tried a saline wash, does anyone have any home remedies that are good?

I have severe allergies to cats and dogs and any animal with dander. I have tried all OTC allergy meds, and most prescription meds. When an allergry outbreak happens I get hives, swollen eyes, sneezing and have ended up in the ER more than 20 times with allergy related asthma attacks. I usually end up with some sort of bronchail infection, ear infections and sinus infections after prolonged contact. My doctor has been extremely understanding but insists all my serious issues are allergy related. I am a Vet Tech student and have an internship coming up. Any advice on what I should do to control the allergies? Quitting is not an option as I have put thousands of dollars into my education and have a passion for nothing else. Serious answers only please, as this is life threatening and life changing.