Mothers of 10ish month old babies????? (or those who have older babies)

Have your children started to change their sleeping patterns at all???? My daughter (for the last 5 days) has been really strange with her sleeps....up until then she was sleeping 2 hours in the morning 1.5-2 hours in the afternoon and 9-13 hours of a night (not waking) NOW she is sleeping for anywhere up to 3 hours in the morning WILL NOT settle for her afternoon sleep and is having very very restless sleep at night...she was up from 12am till 3 am this morning i had to give her a bottle (which i havent had to do since she was 8 weeks old) to get her to setlle and even then she didnt go back to sleep for about an hour......is anyone else having these troubles or does anyone know what it could be...its not teething no signs of it....she has had a little bit of a cold but nothing major...not colic....im lost.....