Spontaneous Intracranial Hypotension and Hearing Issues - Neurology

Suspected spontaneous intracranial hypotension headache causing hearing issues?

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Hello Doctor, thank you for your response.
Background information: 1.
Normal weight, no hypertension.
I have never had headaches in my life.
2.
In 2016, I was hit from behind by a motorcycle.
There was a laceration on the left occipital area, but I was checked that day and did not have a concussion.
About six months ago, I slipped and hit the back of my head on the stairs; I did not seek medical attention, and aside from superficial pain, I had no other symptoms.
Symptoms experienced: I have never had headaches before, but about two weeks ago, while walking on a weekend evening, I suddenly experienced severe pain at the base of my skull (likely the occipital region) and in my neck, which was a pain I had never felt before.
However, lying down alleviated the pain, but upon standing, it felt as if my occipital area was under pressure.
Recognizing this was unusual, I went to a local urgent care the next day.
The nurse checked my temperature and blood pressure, which were normal, and ruled out meningitis.
I mentioned that I was in unbearable pain even while sitting and felt nauseous, and I also heard a whooshing sound in my ears, but the nurse suggested it was a muscle issue and offered to prescribe pain medication, sending me home.
I immediately vomited on the way home, and once I lay down, I felt better.
I researched online and found that spontaneous intracranial hypotension (SIH) headaches closely resembled my symptoms, so I took leave to rest at home.
I tried to lie down as much as possible, but I still went out for walks and to buy daily necessities.
I noticed that walking exacerbated the headache, and my ears felt like they were experiencing pressure imbalances, similar to the sensation when flying.
I endured this for about 12 days, drinking plenty of water, and the headache lessened, although I still felt pressure in the occipital and neck areas when driving or walking for extended periods.
However, starting from day 13, I noticed strange symptoms that have persisted for three days without any relief.
Now, whenever I sit, even doing nothing, or stand, my left ear feels blocked (similar to the sensation when flying), and I can hear my own breathing.
Lying down immediately relieves this sensation.
Even bending over also resolves the blockage immediately (opening my mouth or yawning does not help).
On the right side, every morning when I wake up, it sounds like I’m hearing through something or being muffled.
This is especially noticeable in the morning, and I feel like I can hardly hear out of my right ear.
The right side of my head and shoulder feels strange, and the right side of my neck is tighter.
However, after some activity by the afternoon, if I lie flat and relieve the blockage in my left ear, I still notice that my right hearing feels off; my own voice sounds different in my right ear (hard to describe).
I do not have a cold or any other symptoms, and I am unsure why this is happening.
I have consulted with local nurses, but the local examinations are too expensive.
I would like to ask if it is safe to plan for self-healing? I am just worried this could cause permanent damage to my hearing or brain.
I sincerely appreciate the doctor taking the time to read my description and help answer my questions.
Thank you.

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Xiao Lin, 30~39 year old female. Ask Date: 2020/06/17