Hi Paula,
The girls have given you some great advice and support.
I just wanted to add that I kept earphones next to the bed and listened to meditation CDs when those sleepless nights took over. Usually I was asleep within 15 minutes. (If I didn't play one, I was awake for hours, worrying.)
One the other subject, families can react strangely - some just disappear, and others you least expect, step up to the plate. We have all noticed it. Don't let it upset you - just get through one day at a time.
All the best. Big hug. xx Michelle