Hyperthyroidism(over active thyroid

hi
im a 38 yr old male
ive just been diagnosed with an over active thyroid.
i had 3 strokes a month a go andhave been in and out of hospital since i finally got diagnosed yesterday
over the last year and a bit ive gone from 19stone fit to 13 unfit
could any one let me know what to expect over the next year please as im new too this

thanks rich