Sign of Labor?

Sign na po ba na malapit na yung labor? Currently 38 weeks and 5 days Mild Menstrual Cramps like sa lower abdomen, backpain, pelvic pain, pain sa pwerta. Everytime tatayo parang my mahuhulog galing pwerta, diarrhea, increase of vaginal discharge (watery milky white discharge) #firstbaby #pleasehelp #1stimemom #advicepls