How to cope

I'm 20 and I'm a mom to a 1 year old. It seems like all I do is go to school, work, and sit home. It doesn't just seem that way actually it is that way. I dont even remember who I was before having my daughter. I miss being more than my daughters mom. I miss having friends and feeling pretty. Why do people act like you're no longer you when you have a child? Its definitely made me feel like I'm no longer me. The only things people will talk to me about is my daughter. No one asks how I am, no one is interested in the fact I'm a person as well now that I'm a mom. I know this sounds selfish. I love my daughter and I wouldn't change having her for the world. I just want to matter as well.