I'm 37 in 2 months and I have similar experiences. It's not insomnia but definitely restless sleep (waking a few times a night) and being very warm while I sleep. It happened last night and AF is due next week. That seems to be the typical pattern...a few nights in a row about 4-7 days before AF. I blame it on hormones of someone approaching 40.
Mom to two amazing DDs ('07 & '09) and a fur baby.
Gluten free since Nov '11 after non-celiac gluten sensitive diagnosis. Have had great improvement or total elimination of: migraines, bloating/distention, heartburn, cystic acne, canker sores, bleeding gums, eczema on elbows, dry skin and scalp, muscle cramps, PMS, hair loss, heart palpitations, fatigue. I'm amazed.