Sleep medicine symptoms and conditions

I have only been taking this drug for about 3 weeks and I could not explain at first but just knew things were off. I can not sleep, have terrible nightmares all night long, wake up at 4 if I do sleep. I am 53 and have long hair and my head itches all the time. I now fear hair loss as I have read in other complaints. My eyes are dry, I just feel off, majorly ! My back and legs ache all the time, especially when I first get up in the morning I can seriously barely move or bend down. I feel like I am 83 instead of 53. I have had no headaches but have had weight gain already, especially in my midsection. I feel off mentally all the time, not able to concentrate at all. I am calling my doctor on Monday and they have to give me something else. Has anyone else had these symptoms and what else can you take or do?

My son 10, has been on Singulair since he was 4 yrs old for Asthma and allergies. His last dose was 3/26/08. He has always been my emotional child, he is 2yrs older than this younger brother. Some of his side effects included headaches, stomaches, leg cramps, emotional breakdowns, major mood swings, crying outbursts over small situations, night sweats, lack of motivation, weight gain, ADHD, wishing he were dead and the list goes on. His younger brother has always been involved in sports but he was always too afraid he would get hurt. This medication has robbed my 10 yr old son from 6 yrs of his childhood. Since he has been off Singulair he feels motivated and looks forward to joining the football team his younger brother plays for. I look forward to meeting this new young man who for so long has been hiding behind this so called allergy medicine. I am so thankful to know that my son can look forward to a bright future without these side effects. God Bless you all who are going through this as well.