Once a month, for about the last 6 months, my son (12 months old) becomes very unsettled at night. It always happens about 2 days before I come on my period, and lasts for about 4 days. He goes to sleep fine, but wakes up around 2am and is very upset. It can take up to 2 hours to get him off to sleep again. For the rest of the month he sleeps all night with no problems, so could this be something to do with the hormones in my breastmilk? Or is it a massive coincidence?! My health visitor has never heard of this before, but she's not the most useful of people to be honest....