Sayang, at week 32 diarrhea boleh jadi normal especially if you've eaten something different, tapi since you're pregnant I'd suggest you get this checked with your doctor or midwife soon, better safe than sorry lah, hormones and baby position can affect things and they need to make sure you're staying hydrated and baby's okay. A few of my mum friends had similar scares during pregnancy and their doctors just did a quick check to rule out anything else. Don't worry lagi, just get it checked!