I don't think it's mononucleosis... for one thing there is no noticeable tiredness. I have instead generally found it difficult to sleep. I certainly have a tendency to stay around the house, but due to the painful symptoms, the chills, and mild dizziness, not fatigue.
If you want to consider what it might be, here is a more detailed review of symptoms:
Some days before Tuesday, my left ear became blocked. This happens fairly frequently to me for some reason; a week before that it had happened to my right ear, though painlessly for the duration. Sometime later, I remember not just how long, the left ear started to hurt (which hardly ever happens). I doused it with alcohol Tuesday morning and early afternoon, to no effect. Tuesday involved some strenuous physical activity with no problem, though less activity than usual. Sometime in late afternoon or evening, I began to feel uncomfortable muscle stiffness and ache in my shoulders and neck. These persisted through the night, making it difficult to sleep. Over the next day I also experienced dizziness and pulsing headaches, and the stabbing ear pain continued. Holding still helped it. I also had chills--these have since occurred every few hours and last around fifteen minutes to half an hour. Most likely because I had only gotten 3 or 4 hours sleep the previous night, I slept another 3 or 4 hours during the day; I definitely wouldn't call that "unusual" fatigue. Early Wednesday evening, I had the first chills episode, which I alleviated through use of a blanket. It was at this time that the first semi-hallucinatory episode occurred. Wednesday evening, about 9:00, I took 2 tylenol which evaporated all symptoms except for mild dizziness, including the earache. I retired at about 1:00 and slept until about 2 or 3 AM when I was awakened by symptoms I do not remember--possibly chills. By this time, I believe, that the shoulder and neck aches had disappeared. I had difficulty sleeping, frequently waking up and taking a long time (half an hour to an hour) to return to sleep, until about 7:30 am. I woke up with dizziness, a nauseous feeling, the headache, and the earache. I then took 2 tylenol, which again removed the painful symptoms, and went to Boston for a school-related Museum of Fine Arts tour. Following the tour at 1:00 I again took 2 tylenol, but before they took effect I had another shivering episode, throbbing headache, a stabbing headache near my temples, and stabbing earache on the subway. The tylenol took effect. I had another 2 tylenol at 5:00 and felt fine enough to walk ~2 miles from the bus stop to my house without noticeable symptoms (I doubt even dizziness).
On Thursday night I decided to stop taking tylenol, which lasted until Friday afternoon. The symptoms returned. I woke up with violent chills at maybe 1:30, and Friday the main symptoms were chills, earache, and a somewhat new kind of headache, throbbing pain on the top of my head, that did not hurt except just after standing up and soon went away. Violent chills and extreme hunger again this morning at 4:00 (having taken tylenol at 1:00 AM before sleeping, this is unusual).
The earache usually remains the worst symptom, except under Tylenol, although it might not be part of the rest of infection.
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Micropsia fits the description. I have also in the past (5-10 years ago) had swarms of small white lights appearing from the edges of my vision and moving inwards, disappearing before reaching the center, and on another occasion a few small apparently bouncing lights. In both cases symptoms disappeared rapidly. About five years ago, I had one mild migraine headache that I am aware of, possibly due to dehydration. I think the micropsia has occurred more recently, during the past few years.
