I've just started taking the 10 mg pill for two days. I've notic...

I've just started taking the 10 mg pill for two days. I've noticed incredible chest tightness the day after taking the first pill (almost like too much caffeine). I've had very unusual dreams, and leg twitching. I feel like i'm in a zombie state (this is the second day). I have been taking Symbicort for around a week now and have had no such experiences on that drug. I am wondering if this is all comming from Singulair? I've noticed such a change just by the second day on it, and none of those changes reflect improvements! If this is true I don't recommend it for anyone. If anyone knows if this is true, let me know!