Increased night nursings

This morning, early morning, LO has been wanting to nurse non stop. From 3 hourly starting from last night 11pm to 2 hourly to 1 hourly. I was dead tired. 

Hubby thinks that maybe it is because of teething. I checked but didn't see or feel any. And even though she wants alot of attention in the day, she's not overly cranky. Yet. 

I wonder what's the cause. She used to sttn when she was younger, but lately the night feeds seem to increase. Hopefully tonight will be a better night.