I don't have any friends.

It's taking me a lot of guts to post this because I'm not one to ask for help.. but the past 3 years that I've been a mother it seems all of my friends no longer care about me. Maybe it's because I'm young, maybe it's just apart of getting older and more busy with our families.. but it really hurts. I go to parent classes/preschool with my daughter but never seem to connect with anyone. I'm definitely introverted but I have an extroverted side of me that needs to socialize as well. I just wish I could find friends that I clicked with and didn't get bored of me..