Yes mama, normal lang yan! Those little flutters and kicks are your baby moving around, and the hardening of your belly after eating is usually just your uterus tightening (Braxton Hicks or just normal uterine contractions), totally okay at 20 weeks. That said, if it happens a lot, feels painful, or you're worried for any reason, best to mention it sa OB mo during your next check-up just to put your mind at ease. You're doing great at halfway through your pregnancy, and these little signs na nararamdaman mo are actually such beautiful reminders na healthy ang baby mo!