Early labor signs?

Cheyenne • Mommy to be 🤱🏼 Baby boy due December 👶🏼💙

I am 15 years old and I will be 32 weeks tomorrow (10/19/18). I’ve been having really really bad back pain all day to the point where I could not walk. I started to feel my stomach tightening and that got pretty bad as well, it was pretty frequent for maybe and hour or two. My dad came and got me after school let out and I took some Tylenol to try and help with the back pain. The only thing it did was make me fall asleep. I also tried a heating pad for my back that didn’t help at all. I have felt baby move quite a bit in the last 30 minutes ,but I have severe pain down there in my vagina area. I am super uncomfortable and all I can do is cry with every little movement. My step moms says I’m fine ,but I feel like something is wrong and if I am okay I would like a doctor to tell me because every pregnancy is different. I just went to the doctor on Tuesday (10/16/18) and she said all my concerns are nothing to worry about. My next appointment is (10/30/18) but if I’m being honest this is some of the worst pain I’ve felt.