Pregnancy "Buddies"

Here's the thing, I need to know if I'm being B***h or not.

My co-worker and I are both pregnant, shes about 6 weeks further along than I am. This is her first pregnancy, not mine. She thinks we are pregnancy buddies and need to share/swap stories and what not. She even ran over to my office first thing in the morning to tell me about her first time throwing up 🙄. Am I being unreasonable? I simply do not want to do this co-pregnancy thing that she think we are doing together lol