Hello and hope you are doing well.
The ear symptoms described by you could be due a skin disorder called eczema. People who suffer from this disorder should avoid contact with triggering factors like soaps, cosmetics, jewelry, clothing, and detergents. Sometimes sweat, changes in temperature and psychological stress are known to trigger these episodes. So, the best way to prevent attacks is to identify those substances which you are allergic to and avoid them.
Sinus infections can cause stuffiness of the nose with nasal blockage, which can make breathing through the nose difficult. It can also cause post nasal drip and lead to an irritation in the throat. You will need to consult your primary care physician for proper assessment. In the meantime practice good breathing exercises, humidify your room and do steam inhalations.
Hope this helped and do keep us posted.
I get something similar but have put it down to allergies especially as its very hot here..my eyes sting and irritate..my head aches sometimes ..Do you go into the garden a lot I do and I think I get the allergies from there .I just let it pass.