Anak, please go to your doctor or midwife as soon as you can, hindi dapat mag-alala ka mag-ask for a second opinion, yan ang importante ngayon. The belly measurement and baby movement are things they need to check properly, and it's totally okay to get another professional look, especially since may nagbago from what you expected. A few of us mums have had similar worries at different points, at lagi, ang peace of mind from seeing the doctor ulit is really worth it, walang hassle, walang problema, yan talaga ang best move mo now. Sending you love, and please update us once you've seen someone!