Hindi ka nag-iisa sa ganito, girl! A few of my mum friends didn't feel their baby move until week 24-25, especially kapag first time mom kasi hindi mo pa alam kung ano talaga ang feeling, so totally normal pa yan. The hardening of your belly (Braxton Hicks) is also super common na, pero since you're still in second trimester, best to check in with your OB just to put your mind at ease and confirm everything's progressing well, walang masama sa pag-ask, yan ang trabaho nila anyway!