Hi and thanks for the query,
Probably both of your ears are infected.
You are also suffering from 
sinusitis hence you get pain whenever you bend down.
You can use any over the counter  nasal decongestant like 
otrivin.
You can follow instructions on the scrimp for using otrivin.
After putting the drops give a gap of ten minutes and do steam inhalation for 10 minutes.
Repeat the procedure 3 times daily for 5 days.
Otrivin helps to decongest your nose and helps drain your 
sinuses. 
It also helps to unclog the eustachian tubes which in turn helps to control the 
ear infection.
Drink plenty of water and blow 2 balloons daily. It helps to open your eustachian tubes.
If you do not feel better in 2 more days then you have to go to the doctor.
Regards, Dr Kishori.