Help a sis out! 37wks 5 days

So during my full 37 weeks checkup dr told me that baby cn come out anytime soon as baby head is very low. Usually my left pelvic is painful for me to walk but still bearable, today I wokeup both side pelvic pain and cant barely walk due to the pain and my back is also very painful. Any idea why? or isit normal?#firstbaby #pleasehelp #pregnancy