I'm too attatched to my friend, help please?

I'm a teenage girl. I'm too attatched/dependent on my best friend and it's not healthy. I haven't talked to her in 2 days and I feel so empty. The problem is that people really flock to her while I'm just there. She's the one the people always ask to hangout with, and she brings me along sometimes, so that's how I hangout with people. Without her, I feel like my life would be no where near as fun. She doesn't need me like I need her. And sometimes I feel like I annoy her because I ask to hangout a lot. I need to be independent and make my own friends, but I don't know how. I feel like I'm going to have a panic attack or something. Please help what should I do? I feel like she's prettier and people love her and I just want my own friends.