Losing friends during pregnancy

I’m 24 weeks pregnant with my first baby. I have two separate groups of friends I would have previously referred to as my best friends. But I’m feeling pretty lonely tonight. Over the last few months I have come to realise that one group of friends is just not at the same point in life/level of maturity as my husband and I. They don’t understand the shift in our priorities since becoming pregnant, and I don’t expect them to but naturally it places distance between us.

The real kicker is that my other group of friends, two girls I have been best friends with since high school. One of which is also pregnant, the other who has 1 child already. I was so excited for this period in our lives/friendship and thought this would bring us even closer together. We have been trying to organise a catch up over the last two weeks tho, and schedules haven’t been aligning (I’ve always been free). Which is understandable tho!! But then today I found out they spent the day together and didn’t invite me at all. So now I’m just feeling deflated and totally rejected from both friendship groups with no one else to turn to other than my family (who I am extremely grateful for!!). I feel like distancing myself so I don’t feel hurt like this again in the future but I’m unsure if that’s the right thing to do or if I’m over reacting?