Many pregnant people experience back pain due to changes in their bodies around this time. As the baby grows, the weight can create strain. This can cause pain in the back, buttocks or thighs. While discomfort and pain are common during pregnancy, there are ways to manage these symptoms. Exercises like pelvic tilts and gentle stretches can help. Prenatal massage, physiotherapy and heat therapy may also ease your pain. If needed, your maternity provider can offer more advice.