Baby movement

Ruby
Hello ladies! 
My name is Ruby, I am 21 years old and I am 5 months along. This is my first pregnancy and my boyfriend and I are very excited! But I haven't felt my baby move at all. I am having a girl. Has anyone else experienced this? I always get so scared because my next sonogram isn't for another few weeks. So how will I know if she's okay or not!! Help! Lol