wow! i am up in the middle of the night, sick to my stomach since...

wow! i am up in the middle of the night, sick to my stomach since i got back on advair (500/50). i try to stop using it for a while but my asthma is so bad that i have to get back on it. singulair does not work for me, and this is the only one that seems to work, but when i got on here and read what everyone says about it, it amazes me. i have gained so much weight since the dr first prescribed it to me. i weighed 145 when i first started it and now i weigh 180 and seem to still be gaining weekly! my dr has never even mentioned weight gain being a side effect of this drug. i also suffer severe heartburn which i thought was linked to asthma in some way. i am going to call my dr in the morning and see if there is an alternative!