ear blockage and pain for about 3 months

And have you been to a doctor yet? What did they say? If you didn't go to one, why? I would have gone in the first several days.

Ear blockage for three months, gosh, that is letting it go far too long and we cant diagnose on line, or even give you any idea for relief. We don't know what caused it. Probably you can think back and maybe put a finger on what happened. If you don't want long term problems, I would suggest visiting and ear, nose and throat specialist to get to the bottom (or top) of the problem.