If your sleep is disturbed, talk to your midwife. She'll be able to suggest ways to prevent it, or at least help you cope better. A change of sleeping position may bring relief. Try lying on your side, with your lower leg bent at the knee to support your tummy. Sleeping with a pillow between your legs may also help.
Simple relaxation techniques can help you go to sleep. Concentrate on breathing gently and rhythmically, and contract and relax each part of your body one at a time. Exercise may also help you sleep better by improving circulation and easing stress.
Loose cotton nightclothes or sleeping in the nude can help avoid overheating. A relaxing bath before you turn in for the night may also prepare you for sleep.