coordinate system and find the impedance point falls on the right side of the graph on the horizontal line, you know the circuit is equivalent to a pure resistance.
The most likely cause of the bleeding is from the skin of the outer ear canal after you have been drying your ears a little too vigorously. In the absence of infection, and with you feeling perfectly well and retaining normal hearing, I am sure that you are wise to accept the advice of your GP and carry on as you are.
Normally, the Eustachian tube drains fluid from your ears to the back of your throat. If it becomes clogged, otitis media with effusion (OME) can occur. If you have OME, the middle part of your ear is filled with fluid. It can increase the risk of ear infections.