Night monster!

Does anyone else have a baby who has not yet settled into their crib at night?? My week and a half old may settle for a nap in the day but at night has been constantly feeding on and off, I've ended up co sleeping with my boob out so she can latch whenever. Is this really bad habit making?? I feel like I'm doing such a crap job but she screams blue murder when I try and put her down and seems constantly hungry. Anyone else??? Or has anyone been through this and now has a baby that settles in their crib/cot?? Thanks x