Aw normal lang yan, mama! At 7 months marami pa silang gumagalaw around, hindi pa fully developed ang pinpoint ng movement nila kaya sometimes feel mo siya sa ibaba pa, one of my mum friends said ganyan din ang sa kanya until 8-9 months. But if you're worried or notice anything else unusual, best to mention it sa next check-up mo with your OB para peace of mind lang, okay?