Hi mummy, don't worry, soon u wil experience yr Baby bump at 22/23 weeks and can expect more movements and they will not stop.. jus enjoy the moment now. After dat u wil have less sleep due to their movements..
As long as your babies heartbeats are fine during gynae visit nothing to worry about :) I was paranoid during w18-21 too but gynae assured me at w21 it's fine if you didnt feel the kicks yet
Best to consult your gynaecologist, take care!
Better to consult gynae