Does the caudal segment of sacrococcygeal bone move forward on the frontal radiograph, which affects pregnancy and delivery?

It should be because of the film taken by trauma, or it may be that there was a trauma of sacrococcygeal vertebra before, which changed the curvature of coccygeal vertebra and had no effect on pregnancy and delivery. If it's just a trauma, you can stay in bed first and don't ride a bike for a month to reduce the friction on the sacrococcygeal vertebrae. If the pain is severe, you can take some drugs that promote blood circulation and remove blood stasis, reduce swelling and relieve pain orally, without special treatment. The specific situation should be combined with local orthopedic doctors.