Tolerence level symptoms and conditions

I've only been on singulair for 6 days and it is now 4:23am. I just couldn't sleep tonight. I've been having the strangest dreams and I commented to my wife about them. We just laughed it off. Anyway, at this time of the morning, my EARS are "Hissing" so loudly, not ringing, however I do detect a slight pulsating tonal sound in my left ear, that I just couldn't sleep anymore. I've a history of Tinnitus but something has exacerbated my tinnitus dramatically, so much so it is keeping me awake. I think I'll be needing something to help me sleep now. Perhaps I will stay off the Singulair for now just to see if life returns to some kind of normalcy. Could it be a side effect of Singulair. I don't know but I felt like driving something through my head to stop all the loud noise. Has anyone else experienced elevated levels, or a new development of "Ringing in the Ears", commonly known as Tinnitus?