Zopiclone advice anyone ??

Ladies who are pregnant I suffer insomnia have done for 6 plus years has anyone ever taken zopiclone sleeping tablets during their pregnancy ? Not sure if they are safe or not I don't mind not taking them aslong as my baby is healthy tried to research online but isn't much to go on ??? I don't take them every night I take them once every 4 nights when I'm in dyer need to recharge my battery's advice please ladies ???