Making new friends

I'm a 26 year old  happily married stay at home mom to a 4 year old and baby number 2 is expected in September. After my daughter was born I realized I had no real friends left. They were too busy partying to want to hang out with a stay at home mom.  I'm not into the church or bar scene. My town has a beautiful park that my daughter seems to be the only one who uses. Any suggestions on making new friends? I'm not shy nor is it hard for me to make friends but we live in a small farm town and can't seem to meet anyone