Sis, if you're feeling something unusual, please contact your OB or go to the hospital right away, hindi dapat mag-gamble tayo dito, lalo na kung malapit na ang due date mo! Every mom's experience is different, kaya talaga best to check with your doctor para sure. A few of us in my mum circle had different signs, some had cramps, some noticed changes, pero ang importante talaga is to get proper medical guidance. Your OB will know your situation best and can tell you exactly what to watch for. Stay safe, ha!