Symptom swap

I've reached another blessed milestone - the "morning" sickness is gone. Unfortunately, it's been replaced by insomnia. Lately it doesn't seem to matter how bone tired I am, when I lie down at night my body won't settle, so I end up not sleeping at all. The last 4 nights or so I've been getting about an hour and a half's worth of sleep each night. I've heard that insomnia is normal but normal or not, it's downright annoying.