Started 50mcg Levothyroxine for the first time in about 8 years.
I was diagnosed quite a while ago, and was taking 25mcg, but after a while my labs came back normalized, but I hadn't felt a difference. So I just stopped taking it. Fast forward to about 2 weeks ago, I was having really weird symptoms. Extreme dizziness at weird times, like sitting down doing a word search, and all the words and letters to start the scramble, or when at work standing still and all of a sudden the room kind of just spin a little, irritability, constipated, and breast tenderness not anywhere near that time of the month.

So I waited about a week until I decided that the symptoms are really getting on my nerves. I go to my doctor and they decide to do a blood test for my thyroid levels. One week later the I got a phone call that my thyroid levels are low. And they put me on Levothyroxine. I started taking it on Tuesday and I swear I instantly felt a difference maybe an hour later after taking it. It's like a fog has Lifted, and I just felt more energized and ready to do more stuff. Could I have been depressed and not even known it? Is it possible to feel the effects of Levothyroxine that quickly? Everything I've been reading says it'll take at least two weeks to adjust.

I got a Fitbit in February for Valentines Day. It has been tracking my sleep at night. I was getting an average of 9 hours of sleep a night, but ever since the beginning of March, my sleep has just been sucky, like down to 4 hours per night. I'm wondering if my thyroid has anything to do with that too?