Weight gain, joint aches, knee pain, insomnia, irritability, depr...

Weight gain, joint aches, knee pain, insomnia, irritability, depression...and the tests come out okay. So what is wrong with me? Why do I continue to gain so much wieght and the fatigue is horrible! Over the past five years it has snuk up on me but now I am thinking this Singulair is the culprit. I haven't had as much trouble with my asthma ...true...but I feel horrible. I am going back to using Advair as needed and my albuterol as needed. Goodbye Singulair!