The last month I haven't been able to sleep in the nights. I've lost a stone and a half in weight aswell. What can I do to help me sleep?

Get it checked out! Seek medical help to determine to cause of your lack of sleep quality. Typically a collapse airway is involved and today, a simple overnight take home sleep test can provide all the information needed to determine if a potentially life threatening, life shortening condition of obstructive sleep apnea may be at play. Do it, it may save your life!