FTM question, please be nice :)

Hi! I have a question...I'm almost 22 weeks pregnant and started feeling the baby move this past week. I had my anatomy ultrasound on Monday and all went great! Since weds I haven't felt the baby move as much. Sometimes a punch here and there and a roll but not strong kicks like earlier in the week. Is it normal for the baby to not be very active if at all some days? I'm sure the answer is yes and that I will feel her more as the weeks go on, but it's nice to have some input first hand from other mothers. Thanks!!