sleeping too much?

Samantha

Okay so for some weird reason baby girl (3months btw) has decided to sleep from 7pm-11am( feeding at 345am&735am) that's a really long time for her to sleep at once right? but when I tried to keep her awake at the 7am feeding she was so sleepy and cranky I had to put her back down. is she getting sick? or just a growth spurt? is the room maybe too cold? (which I doubt because she runs hot naturally) Does anyone else's 3month old randomly sleep this much?