Aww sayang, I know it's scary especially when you've got a fever on top of everything else, but the good news is baby's okay from your scan tadi! That keputihan you're describing sounds pretty normal for pregnancy, tapi the fever + mild cramps together is something you should get checked out asap, better safe than sorry lah, especially at 16 weeks. One of my mum friends had something similar and turned out it was just a UTI yang kena treated dengan antibiotics, but your doctor needs to rule things out properly. Don't wait, go to your clinic or hospital and let them check you and do a swab if needed, demam with cramps shouldn't be left hanging even if it feels mild. You'll feel much better once you know what's going on, trust me!