Sayang, dengan symptoms macam ni at 38 weeks, especially the abdominal pain, the diarrhoea, and the discharge, please go to your hospital or clinic today, jangan delay. Better safe than sorry, kan? Your doctor kena check properly apa yang happening, bukan guess-guess. Banyak possibilities ada, and some boleh urgent. A few of my mum friends had similar signs menjelang labour, tapi some turned out kena other things, so professional check-up je yang boleh confirm. Don't wait until malam, go now!