Fetal movement

Hi mummies and mummies to be! At 27 weeks, how much fetal movement do you feel? Is it frequent or do you feel it once in a while? I read that you should feel the movement every 2 hours and keep track of it. Is this what you are experiencing too? Abit worried cos that is not the case for me. Either there isnt much movement from baby or i just didnt realise or feel it. Please help! Thank u!