Hello! 35 weeks not full yet But already physically hard The pelvis bones…

Hello! 35 weeks not full yet But already physically hard The pelvis bones hurt like it was torn now Pain appears periodically especially at night Especially in the lower back Plus there's pain, heartburn in the stomach Like acid is poured in Walking becomes difficult periodically A feeling of discomfort like a tunnel being dug by a child How can I cope with this? What helped you?