Signs labor is near?

I’m about 33 weeks. I’m nauseous, getting Braxton hicks, dealing with extreme bum pressure and pain in my hips/pelvis. Is this just baby dropping or should I be concerned about preterm labor? I’m high risk dealing with preeclampsia and GD so I’m hoping I can get some other opinions before calling the advice line. I feel like they’re just going to have me come to L&D and I don’t have anyone to help with my kids tonight