I'm 15 years old, and I've been taking Singulair since late Febru...

I'm 15 years old, and I've been taking Singulair since late February of this year, so about 4 months. My asthma and allergy symptoms seemed to have almost disappeared, but just recently, I've had headaches, and I've been irritable and moody according to my mom. After reading these posts, I've discovered that some weird things I've been experiencing may be linked to taking this medication. I've had weird hallucinations, in which I've been seeing and hearing things that aren't there. At first I thought it was just because I was tired and/or dreaming, but reading these other experiences, I'm starting to think otherwise. I don't think these symptoms are bad enough to quit taking it, but its starting to worry me a bit. I've told my mom about all the posts I've read on here, and that I've been experiencing many of them, but she think I'm just a hypochondriac. Any suggestions or anyone with similar symptoms?