What changes, and why it hurts
As the baby grows, the curve of the low back deepens and the center of gravity moves forward. The hip flexors shorten to keep you upright, the low back works overtime, and the whole chain complains.
Late in pregnancy the body releases relaxin, which loosens the pelvis in preparation for delivery. That's the intended effect — but a loosened sacroiliac joint is also a joint that can move badly, and that's where a lot of the pain lives.
Prenatal-safe care
Adjustments during pregnancy are modified: different positioning, different tables, different amounts of force. The point is to keep the pelvis and low back working well while everything around them is in motion — without medication.
It's easier to keep a pregnancy comfortable than to rescue one that's become painful, which is why it's worth starting early rather than waiting for it to get bad.
The Webster technique
The Webster technique is a specific chiropractic adjustment of the sacrum, paired with work on the soft tissue and ligaments around the uterus. Its aim is to reduce tension and restore the pelvis to balanced function.
True Health's own prenatal page describes incorporating Webster into care when it's appropriate. It is a technique used in this office, not a promise about how a delivery will go.
After the baby
Postpartum, the body has to unwind everything it spent nine months doing — while lifting a car seat, sleeping badly, and feeding at a very bad angle for the neck.
That's an ordinary mechanical problem and it responds to ordinary mechanical care.