Aiyah don't worry lah, at 19 weeks it's very normal pa if you belum rasa gerakan yet! First pregnancy especially, some mummies don't feel consistent movements sampai closer to 20-something weeks because baby still very small and the movements might be super gentle, sometimes macam butterflies je, easy to miss. A few of my mum friends said they were worried jugak at this stage, but their babies were moving fine, they just tak sensitif enough to notice yet or baby was positioned in a way they couldn't feel. The important thing is your baby is definitely moving, you just might not be picking up on it yet, patience je for now! Of course, if you're worried, best to mention it to your doc or specialist during your next checkup, they can check everything is fine and put your mind at ease.