Hi little lotties,
Here are some symptoms of sinusitis:
Nasal congestion not responding well to either decongestants or antihistamines
Runny nose or postnasal drip
Thick, yellow, or green mucus
Cough , often worse at night
Ear pain, pressure, or fullness
Facial pain or pressure that increases when you bend over or press on the area
Facial congestion or fullness
Although dizziness and off balance are not particular symptoms of sinusitis- note that ear pain, pressure or fullness is-- meaning that it is possible for you to feel a little off balance if your inner ear is being affected. To be sure, please schedule a visit with your doctor for a full physical exam.
Here's some more info on sinusitis: https://www.empowher.com/media/reference/sinusitis
Keep us posted and good luck!