The symptoms mentioned by you suggest that you might be having Otitic Barotrauma
It occurs as a result of retraction of tympanic membrane(ear drum) due to in-equalization of pressure in the middle ear.
There is a tube (known as Eustachian Tube) between middle ear & nasopharynx
which helps to maintain equalization of pressure.
When the tube does not function properly (such as blockage due to common cold
) the pressure differences(specially when the aircraft descends) force the eardrum
to retract, causing pain.
1. Antihistamines to provide symptomatic relief
2. Analgesics to relieve pain
3. Nasal decongestants to relieve obstruction of the tube.
It is a self limiting condition & usually gets resolved on its own
If symptoms still persist, it will be better to consult a ENT Specialist
There is no need to worry...you will be fine.
Wish you a good health & speedy recovery.
Thanks & Take care.