Hi iris,
I see you're online now. As the others have said there is nothing abnormal about you. I've told you my story - how differently I felt with my two boys.
It's actually quite common in new mothers to feel like this. It's a shame that with this being brought to light that your family aren't more supportive.
However, as Dandylion said, your therapist may be able to talk to them and explain.
There's so much good advice for you on here that there's really little I can add. Over here, it would be our doctor who referred us to relevant agencies, not a therapist but I don't know how it works in the US. Hopefully though, once you see your therapist, things will progress.