Your symptoms suggest that you may have developed sinusitis
with early otitis media
due to the phlegm ,resulting from your cold,going in sinuses
and eustachian tube (the tube between throat and ears) .
Take steam inhalation three times a day
Take hot liquids
Avoid cold drinks
Use nasal decongestant for 4 to 5 days
Take some anti allergic medicine in night.
Normally these measures should make you alright in a weeks time however,if your symptoms worsen or you start getting fever
then you may need a course of antibiotics prescribed by your doctor.