At baseline and follow-ups, the women will report present pain distribution on a pain drawing (including onset and modality of pain). Pain intensity at present and as worst during the past week will be measured by a 100 mm VAS (Visual analogue scale). Functioning will be assessed by Disability Rating Index (DRI), Pelvic Girdle Questionnaire (PGQ) and Short Form 36 (SF-36). Throughout the treatment period, the women will daily record pain intensity in a pain diary by use of a 100 mm VAS.