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.
A variety of medical conditions (allergies, viruses, colds and upper respiratory infections) can cause fluid to collect in the Eustachian tube and/or middle ear, leading to congested ears. Ear congestion symptoms may include: muffled hearing, pain, inflammation, discharge, swelling and/or itching. This type of congestion typically resolves itself within 48-72 hours. Most of the time, ear congestion is not uncomfortable, but if you experience constant ear pain and/or discharge, it is important that a medical professional be contacted immediately.