Oo normal yan, mama! Sa 20 weeks, ang baby mo ay nasa gitna pa lang ng uterus kaya feel mo siya mostly sa puso area pa, lalo na kung first time mo 'yan. A few of us moms noticed the same thing, parang nasa chest lang ang movements initially, tapos as they grow mas bababa na siya towards the lower belly. But since you're 20 weeks na, maganda rin i-confirm with your OB during your next check-up para sure everything's on track, ha!