Some people gain weight with hypo but I was 14 when it started at 16 I weighed 90 lbs, I had stopped eating and slept about 15-20 hrs a day...and I was yellow and swollen. I am 38 now.
you have to be on the medicine for at least a week sometimes a month before your hormone levels will move. I've had it for 24 years I'm 38.. I take 300mcg daily...you will strat to become symptomatic pretty quickly within a few days on a dose like mine.
I have been on 300mcg daily for years, I began at 14 with 125, I had 4 children it went up with each pregnancy and here I am at 40 on 300mcg. So no, I am on the highest I've seen..lol