I'm not sure that I'm bonding with my baby. Isn't this something that's supposed to happen automatically?

Is your child an infant or toddler? If it is just after the delivery, might be one of the symptoms of post natal depression. Don't be too harsh on yourself. If it's a toddler and you are suddenly feeling so, best to dig in deeper and see if something else is bothering you. In either case, take is easy and be loving to yourself. Bonding will happen and you could then take up a few activities to enhance it further.