"i have only been on belviq for less than a week. i haven&#039;t worked out yet but my side effects were extremely bad the 1st two days. i had a migraine that was  out of this world and i felt very intoxicated. don&#039;t know what to say about it yet but i stepped on my scale after 4 days and i gained weight. not cool and i&#039;m almost scared to continue. any thoughts or suggestions would be appreciated."