Hi there Jessica
Congratulations on your second pregnancy.
It is perfectly normal to feel this way. When I had my 1st child, I wondered if I would ever be able to love another child as much as her, even though I wanted a 2nd one.
I some times doubted in having one more but the feeling to have another one was always in my mind.
I promise you, a mommy can love ALL her children. My son is 13 months now and I love him so so much. I can't imagine my life without them.
There is a lot of room in your heart to love them both. I completely understand your worries.
The reason for not being "able" to bond with this baby through your pregnancy is because there is already another child that needs attention. You can't really focus so much on this pregnancy as your first.
Don't stress. Everything will be ok!
Please come update once the little one is born