Am I a terrible person for being absolutely scared out of my mind after finding out I’m pregnant?

We just found out a few days ago and I’ve been consumed with fear . For context, my husband have only been married for a couple of months. This wasn’t planned, I wasn’t ready for this stage of life. I’m in the medical field and so worried about the possibilities. What if we miscarry? Will our baby be healthy? I’m not ready for the trauma of birth or what feels like the never-ending roller coaster of motherhood to follow should everything go well. I’m I going to lose myself? Will I hate my body for the rest of my life?
My husband is so excited and optimistic about the future. I always wanted children “one day” but didn’t except it to be today.
I just don’t feel ready.
I have friends who have been trying for years to get pregnant and have spent thousands on fertility treatments. And here I am, feeling like I’ve jumped into the cold, dark waters. Wishing so desperately to go back to the life I’ve known.
I don’t feel like I can talk to anyone about this. I’m suppose to be excited…

Am I a terrible person for being absolutely scared out of my mind after finding out I’m pregnant?