Feeling disconnected?

I am feeling guilty because I feel so much more disconnected from this pregnancy than my first. I kind of get it is due to being so busy, working full time, taking care of a toddler, my husband is finishing up his degree..... We planned him and I want him and I love him. But sometimes I wonder how I can love someone as much as I love my daughter. Anyone else feel this way? Am I a horrible for feeling like this?