Have backed up water in my ear that won't dissapear, and i've had a cold for a month. i tried everything.

A : A cold or other upper respiratory tract infection can cause the eusachian tubes to swell and not allow them to relieve the pressure in the middle ear. It feels likel there is pressure in the ear, you can get fluid in the middle ear, sometimes pain, popping, etc. A cold that last for longer than 14 days should be seen by a doctor. Ear symptoms after a cold/uri can last up to 2 months.

Assuming : Assuming you have serous otitis media ( clear or amber fluid seen in middle ear space often precipitated by viral upper respiratory infections) the likelihood of spontaneous resolution at 4 weeks is approximately 60%, 80% by 2 months, and 90% by 3 months. In other words, the longer one waits the greater the likelihood of it resolving on its own. Most ENT physicians begin to consider draining the fluid from the ear (myringotomy +/- tympanostomy tubes) after 8 weeks of persistent fluid. In an adult (where typically problems like this are less common than in children), and particularly if the problem is unilateral, a nasophayngoscopy is important to rule out a space-occupying growth that may be interfering with normal eustachian tube function. Patients with cold-like symptoms such as nasal drainage, ear and nasal blockage may attribute this to a "cold" when in fact it represents a more serious problem. I don't say this to unnecessarily worry you, only to highlight other things we as physicians consider. I would have an ENT phsician examine you to put your mind at rest and treat you appropriately. In the mean time i would recommend a trial of topical nasal afrin for 3-5 days every 12 hours and attempt periodic gentle attempts at popping your ears (autoinsufflation) to try to open up the eustachian tubes.