I tried to relieve pressure in my ears by holding my nose and now I have pain in my right ear I've had a cold for a few days

The . The eustachian tube is a structure that goes from the middle ear to the back f the nose whose job is to equalize ear pressure. It is what "pops" when you are in an airplane or fast moving elevator. During a cold, this tube may not function due to swelling or edema. So when you popped your ears to attempt to relieve the pressure, the eustachian tube may have locked and led to pain. Other possibilities is that the cold progressed to an ear infection. If you don't have high blood pressure, try afrin (oxymetazoline) in the nose for one or two days to relieve the pressure or see a primary doctor or ent. Do not take the medication for more than 3 days or rebound rhinitis may develop.
Because . Because of swelling, it may be difficult to fully clear. If not, fluid can build behind the ear drum and cause pain. If the pain persists, you should see your ENT or pcp and have them evaluate your ear.

Related Questions

When applying pressure to my ears (closing nose and exhaling) I hear a whistle in my right ear. More pressure, louder whistle. What is happening to me?

Whistle . You could have a small hole in your eardrum that's allowing air escape. Or, the movement of the eardrum itself is making that noise. Read more...
Perforation? If the whistle is longer than momentary, you may have a perforation (hole) in the eardrum of your right ear which is allowing the pressurized air to escape. An ENT doctor would be in a good position to evaluate for this and decide what if any treatment is necessary. Read more...

I've been having a cold for several days now with headaches, throat pain and a stuffed nose. I showered and now my right ear really hurts.?

Ear infection. It would not be unusual for an ear infection to occur as a complication of a cold. Sometimes sinus infection will cause ear pain as pus drips over the eustachian tube orifice in the back of your nose. See you doctor, you may need an antibiotic. Read more...