For the past month or so, I've had a worse and worse time getting to sleep. I've built up resistance against OTC sleeping aids (with doxylamine), and I can't bring myself to see a doctor for a prescription pill yet. It is to the point where if I don't take five or six sleeping pills (which I've done once, then thought better of it, in case I should accidentally overdose), I just don't sleep. I will remain awake for 35+ hours before I'll just end up crashing, and even then for only about five hours.
I can lock myself in a pitch black room, with no noise at all, close my eyes, and not sleep. My muscles are aching from fatigue and my eyes are almost constantly burning I'm so tired and sleepy. Sometimes my vision blurs and I'll get dizzy, almost as if I'm hung over.
On top of that, I've had an incredible thirst lately. Normally, I'll drink about 90 oz of water a day, spread throughout it, but in the past weeks (since the insomnia started), I'll drink that much in the first two or three hours I'm awake (I have a water bottle that tracks it). I don't drink soda, tea, alcohol, or coffee, have diabetes, smoke, or anything else I can think of to bring this about. I've never tried to forgo the water, or cut back on it, because if I don't sip constantly I start to get shaky.
And surprisingly, I'm not needing to use the restroom any more often than normal.
I'm 5'7" and 128lbs, and I used to run (too tired now)m so I don't think it has to do with my weight either.