Mucus plug

Hey ladies I'm 2 days away from 34 weeks pregnant and I've lost my mucus plug already, I'm freaking out cause now I'm scared I'm going to go into labor to early, has anyone else had any experience with this happening? I called the doctor and they said not to worry and try and not move around to much, I have an appointment on this Thursday. I can't help but be scared, I worry about my baby girl coming to soon.