I take singulair each morning. In addition to the singulair, I a...

I take singulair each morning. In addition to the singulair, I also must take Advair 250/50. Since starting these medications (at the same time), I have been having lower back pains (lower back joint pains?). Recently, I also have had JOINT pains in my hips and knees. I feel tired and worn out even if I have had plenty of sleep. I also find myself gaining weight as a result of eating much more. I don't know which one of the drugs is causing these symptoms, but I am worried. My asthma has been pretty bad since October, and I am worried I might not do well without the meds. I still need to use my albuterol inhaler occasionally, too. Is joint pain associated with either the Advair or Singulair? Also, when I take ibuprofen to alleviate the pain, it either is not working or the pain is so severe it seems to not be working.