My 4 month 3 week baby boy has been sleeping basically all day long. He has been fussy the past couple nights, fighting me when it's time to nurse to sleep. Last night he didn't go to sleep until 1 and woke up at 8 to eat, slept again until noon then was awake for maybe two hours and is sleeping again. He has done this a couple times since he was born. He has never slept this long at once though. I don't think he is nursing more often, which I know is a classic sign of growth spurt. The only thing different these days is he has been more vocal and his coos sound more like words. (We have noticed him "saying" ma, hi, and yeah...all things we repeat to him often since birth) He has also recently learned to roll over and is trying hard to pull himself up into sitting position, plus he's discovered his toes. So he has done a lot of developing lately. I'm just concerned that maybe something is wrong because he has been sleeping all day.