Sayang, lendir putih macam tu boleh jadi normal discharge ke, tapi sebab you're at 16.9 weeks pregnant, PLEASE check with your doctor or midwife first ya, better safe than sorry, especially when anything changes. A few of my mum friends had different discharge throughout pregnancy, tapi each pregnancy is unique, so doctor kena confirm if semua okay je. Don't worry too much for now, just get it checked out!