Hi--I have severe sleep disorder--wake every couple of hours thru the nite, sleepy and spacey during day, forgetful, etc. 2 days ago i had my zoloft increased from 25mg to 50 mg, and in the afternoons i shake like i can't get warm, like i have the flu, but no temp, and a HUGE forehead headache. i do take synthroid for low thyroid, but I've been tested ok for that. i can't function like this. Please help me! Trucky