| Mine normally do the same at this time of year, although not quite as early as yours - whereabouts are you located?
I also find that mine pace their enclosure during the night, trying to find a way out - it's because they're trying to find a mate, the cooler night temps is what triggers them I think.
Last year they commenced mating as soon as I put the male in with the female.
Cheers
david | 
