My baby is 4 months old and until recently slept terribly. She is sleeping soooo much better and usually only wakes once for milk at around 4, so why am I so flippin' tired?! I feel worse now than I did when she was up every 90 mins 
I'm falling asleep on the sofa by 8.30 every night and get so tired I feel sick, but I am getting plenty of sleep so it doesn't make sense?!
Any ideas? Are there any vitamins or supplements that will make me feel more human?