So much pain😭

I'm 35 weeks tomorrow and I know it's too early but I'm super concerned about going into labour early! I've been having a lot of vaginal and pelvic pain the past week and last Friday I was in the hospital because of decreased fetal movement, they ordered an ultrasound and I found out that baby's already in position now it's just waiting for my body to catch up. I wasn't too worried at first but then yesterday I started having what I'm pretty sure are Braxton hicks contractions and super weird discharge, I also noticed I was starting to lose little bits of my mucous plug. So far there's been no blood or fluid leaking but please someone offer reassurance that I'm fine and just freaking out for no reason. My doctor says it's fine but I've noticed it tends to be easier to calm myself down when I hear from people with more personal experience. I know he's a doctor and practicing medicine for years but sometimes it's easier to hear things from average people who actually have a uterus. Sorry for the long post, and for rambling. Thank you!