Friendships and having kids

My two closest friends do not have kids and don’t plan to ever become parents- not because they can’t just because of preference. I totally respect that, but I am scared of how it already feels hard to share and be vulnerable with them. One is easier to talk to than the other about all of this, but oouff. I just feel kinda sad because i think my best friend from childhood is just not going to be able to relate with me and it makes me hesitant to share and then i become resentful. I really wanted to tell her about some struggles while TTC but i didn’t. I told her months ago we were gonna start trying, but then she never asked. When i told her today i was pregnant she had a very calm reaction. It was like happy but not a lot of emotion... she said she was excited but idk :( she asked if it was planned.... which was kinda weird because the last time i saw her i told her my husband and i were going to start trying

What has been your experience with longtime friends (who don’t have and might never have kids) and pregnancy?