Even though activities such as having sex or trying an herbal supplement may seem harmless, in some cases they could cause harm to you or your baby. Before trying any natural option to help labor progress, ask your doctor or midwife. She will help you decide whether there are safe, effective options for you. If you ever have questions, or even just feel frustrated about your pregnancy seeming to take so long, talk to your doctor or midwife. These professionals are used to the concerns and questions pregnant women have and are happy to talk with you about them. Walking is one of the most popular activities to help labor progress and to start labor. Gravity is the main reason walking works. The baby is drawn down towards your pelvis and this primes your cervix for labor. The swaying rhythm of walking pushes your baby's head against your cervix, simulating the release of oxytocin. This hormone can trigger contractions.  Walking can also help build muscle and increase physical fitness, making labor faster and less painful. Slow, gentle walking is ideal. Do not go too far or push yourself too hard physically in the late stages of labor. An easy stroll around the block is probably adequate. Sex can be difficult in the late, late stages of pregnancy, particularly if labor has already begun. However, certain hormones released during sexual activity may speed up labor, although little evidence to support this exists. Because certain pregnancy complications can make nipple stimulation or sex unsafe for your baby, you should always discuss this option with your doctor or midwife before trying it.  Penetration can stimulate your body to release prostaglandins, a hormone that helps dilate the cervix, prepping your body for delivery. Stimulation of the breasts and nipples or orgasm can also trigger the release of oxytocin, which may trigger contractions.  Remember, sex is only safe if your water has not broken yet. Once your water breaks, sex could lead to an infection that could complicate labor and delivery. Oftentimes,...

TL;DR in Vietnamese:
Hãy hỏi ý kiến bác sĩ hoặc người đỡ đẻ cho bạn trước. Thử đi bộ. Quan hệ tình dục nếu được. Cử động trong khi chuyển dạ. Tắm nước ấm. Ăn uống trong khi chuyển dạ. Tránh “các phương pháp truyền miệng”.