Second child guilt?

Is it weird that I feel guilty if I do things with my second pregnancy/child that I didn't do with my first? 
For example, I didn't keep up with bump pictures with my first so I didn't do it with my second either. 
I also didn't keep up with monthly photos (which makes me so so so sad and mad at myself) so I'm not going to do them with my second either (I'm still pregnant). 
It might just be because my kids are so close together (my son will be 20 months when my daughter is born) and I'm already afraid my son will feel kind of unloved because his father isn't around but my daughters is. 
Am I just crazy?