Sayang, pain or pulling sensations dalam perut especially around the umbilical area tu memang boleh jadi normal during pregnancy, tapi since you're experiencing sharp or concerning sensations, please check with your doctor or midwife just to be safe , better to get it confirmed rather than worry, kan? A few of us mums had similar sensations around 20 weeks, some it was just ligament stretching as the baby grows, but everyone's different lah. Your doctor can properly assess and make sure everything's okay with you and baby. Don't tahan-tahan, terus book an appointment ya!