Did anyone lose friends?

I feel like I lost my best friend after having my LO. She just turned 5 months old and she hasn't bothered to come and visit us :( when she talks to me on the phone she never asks how my LO is doing or ever brings her up. It really hurts.. I think it's obvious I need to just move on but I don't even know where to start. 
She doesn't have any kids either but I still don't think that's an excuse for ignoring / not seeing or asking me about my LO. 
Is anybody else in the same boat? Any advice?