Is it normal ...?

I met with my new OB and new high risk doctor and they both asked me if all my kids have the same father. Is that a normal question to ask ....? I felt pretty offended but don’t know if I’m overreacting due to pregnancy hormones

-**** yes I’m married. I’m also black my husband is white (was with me at the appointment) and the doctors were white. I just felt very very offended.