Aw congrats sa pregnancy, mama! At 21 weeks, ang movements mo ay very light pa lang, parang butterflies or bubbles lang, kaya hindi pa talaga obvious if baby is "malikot" or not, pero totally normal na may movements na! A few of us first-time moms din nag-worry about this, pero honestly, baby movements at this stage ay sign na siya's developing well. If you're really concerned about the pattern or frequency of movements, best talaga to check in with your OB sa next appointment, kasi sila ang makakasabi ng specific observations based sa ultrasound and baby's position. For now, just eat well, stay hydrated, and relax, mas marami pang months for you to really feel baby's kicks!