Participants will be evaluated for any health contraindication. Once reviewed they will received full spine chiropractic treatment for 4 weeks, at the rate of one adjustment per week. After three visits they will complete the outcome measures

Paticipants will be selected amongst thse attending predelivery sessions. They receive no chiropracti care. They will complete the outcomes at the same time as the Intervention group and then 4 weeks later.

Chiropractic adjustment is a procedure in which trained specialists (chiropractors) use their hands or a small instrument to apply a controlled, sudden force to a spinal joint. The goal of this procedure, also known as spinal manipulation, is to improve spinal motion and improve your body's physical function.

The Short Form-36 Health Survey (SF-36) is one of the most frequently used and evaluated health-related quality of life measures for pregnancy. It is composed of 36 questions (items) that evaluate both positive and negative states of health. The questionnaire assesses eight dimensions: physical functioning, role limitation from physical health problems, bodily pain, general health, vitality, social functioning, and role limitation from emotional health problems

The Pittsburgh Sleep Quality Index (PSQI) is a self-rated questionnaire, which evaluates sleep quality and disturbances over a period of one month. It is composed of nineteen individual items creating seven subcategories: subjective sleep quality, sleep latency, sleep duration, habitual sleep efficiency, sleep disturbances, use of sleeping medication, daytime dysfunction and the total PSQI score.

The Numeric Rating Scale (NRS) is among the most commonly used measures of pain intensity in clinical and research settings. The NRS is an 11-point scale, from 0 to 10 with 0 indicating "no pain" and 10 representing the "worst imaginable pain". Participants select the number that best represents their pain intensity.