Aww mama, senggugut yang datang pergi je tu memang false contraction (Braxton Hicks), normal je at 36 weeks! Tapi sebab pinggang sakit jugak, better check dengan doctor atau midwife cepat je untuk confirm semua okay, especially since this is your first time. A few of my mum friends had similar symptoms menjelang delivery, some were just practice contractions, tapi asal check je to be safe. Stay hydrated, rest more, and keep track if contraction tu datang regular atau random, good info untuk doctor nanti.