You might get some information out of this ESSAY I wrote a while back on the difference between barotrauma, middle ear infection, and outer ear problems. Another good source of information is Dr. Kay's (rather long) video on THIS site. HERE is a good article on a variety of equalization techniques.
It sounds to me as though you had some barotrauma from your dives which resulted in fluid accumulation in the middle ear, which has been slow to resolve. But the doctor's examination should help sort this out. One of the clues for me was the "pinch nose and blow HARD" comment -- it should not require blowing hard, and if it does, it often suggests that you have left equalization too late, when the pressure required to open the Eustachian tube is higher. And at that point, some vacuum effect has already occurred in the middle ear, drawing fluid out of the capillaries. If it's severe enough to cause bleeding, the fluid is particularly slow to resolve.
The good news is that it's likely that all of this will resolve and that it can be prevented in the future by some of the ideas in the references I gave you.
It sounds to me as though you had some barotrauma from your dives which resulted in fluid accumulation in the middle ear, which has been slow to resolve. But the doctor's examination should help sort this out. One of the clues for me was the "pinch nose and blow HARD" comment -- it should not require blowing hard, and if it does, it often suggests that you have left equalization too late, when the pressure required to open the Eustachian tube is higher. And at that point, some vacuum effect has already occurred in the middle ear, drawing fluid out of the capillaries. If it's severe enough to cause bleeding, the fluid is particularly slow to resolve.
The good news is that it's likely that all of this will resolve and that it can be prevented in the future by some of the ideas in the references I gave you.
