Cherrios,
U better go rest, my gfs told me( not 1 or 2, but afew)if when preg always sleep late, next time ur bb also will also like u, cos they 'learn' from u when still in our tummy.
I see example ard me too, my sil always watch korean serial when she preg till 2-3 am and the little one also active till 11pm.
I also see my another gf, during her first pregnancy, she sleep early..10+ 11, her son now 9pm will 'kui kui' go to bed, her second preg she already reading at nite till 12-1am, now her gal 12am still dont want to sleep!