I need help deciding if this is a red flag that I should take seriously or if it is just my pregnancy horomones acting up and making me too sensitive.

I’m currently 8 weeks pregnant and although the pregnancy was not planned, I have been with my fiancé for over 4 years and feel prepared to welcome a new little life into this world and can’t wait to be a mommy. My fiancé has reacted really poorly to the news of my pregnancy and hasn’t been very supportive at all. He hasn’t been touching or kissing my stomach at all, bringing up the baby, or talking to my little growing bump. He hasnt been mean at all, just not very supportive or excited. My friend is pregnant right now so I find myself comparing him to her partner who is really supportive and overjoyed about her pregnancy, which I know isn’t fair to my partner. I thought he would become more excited after the first ultrasound but that’s not the case.

Is this a red flag or do I just need to take a chill pill and give my fiancé some time to adjust to the news of the pregnancy? Help a girl out.