My six weeks baby.likes to sleep in a pillow i'm afraid about her neck but she falls asleep easily and sleeps more than two hours, is it okay!

High risk of SIDS: Sleeping on a pillow has been found to pose a higher risk for sudden infant death syndrome (SIDS). While the risk of this happening is still small, it is certainly more with pillow use. I don't know if I would take that risk to get some extra sleep. She will learn to sleep well without use of the pillow - she just needs a little more time to accommodate to that.