Uy, totoo yan, a few of us experienced the same thing before giving birth, parang false labor or Braxton Hicks na parang totoo talaga! Ang aming OB said na normal lang yan especially pag malapit na, pero sobrang uncomfortable talaga, lalo na pag FTM ka pa lang. Since you're already 39+ weeks, best call your doctor or birthing center para ma-check ang cervix mo, baka dini-dilate ka na or baka need lang sila malaman na nandito ka na at ready na, para if sudden labor talaga, alam nila na. Good luck, mama! Malapit na talaga ang big day mo!