Realizing she’s my best friend but I’m not even worth that much to her

I have a friend and I love her so much she is an amazing friend (or at least I thought she was) but recently I’ve realized I’m the one who’s always messaging first and always asking to hang out, and I’ve realized that someone I thought was my best friend might not even be my best friend. I decided to see if this was true and see if I was the one starting all the conversations and it was true she hasn’t even reached out to me in days. I’m glad I’m finding this out now before I grew to attached but it still really hurts to know this Girl I’ve known since 5th grade and has seen me through my highs and lows might not even care that much about me like I thought. Does anyone relate?
Edit: I want to make this clear that we both used to be the ones starting the conversations and it just feels like I’ve been the ones carrying them and like she’s not even interested, also I moved away a few years ago but we constantly kept up our friendship through text and call that’s why I’m thinking she is letting go because that is our main communication