Ah sis, placenta grade 1 means your placenta is still young and healthy, it's the earliest stage of maturity, which is actually good news kung you're still in your second trimester! A few of us had this sa aming ultrasounds, and our OBs explained na ito lang talaga ang normal progression ng placenta as your pregnancy goes on, like how your baby grows din. Basta always ask your doctor kung anong grade ang expected for your current gestation age, para sure ka na everything is progressing the way it should, that's the best way to understand kung normal ba talaga for your stage ng pregnancy.