Jangan risau sangat, I pun masa 19 weeks baru start rasa sikit-sikit je, and honestly at first I wasn't even sure it was baby or just gas, memang confusing! Tapi since you dah check heartbeat ok, that's a good sign, cuma kalau rasa tak sedap hati or lama sangat tak rasa apa-apa movement, better go see your doctor or gynae terus la, sebab they can check properly and bagi you peace of mind.