Baby movements at 22 weeks. Okay to have quiet days?

Hey everyone!

FTM with anterior placenta, so I just started to feel flutters last week Then the day before yesterday the baby was REALLY going crazy lol. She was kicking up a storm pretty much all day, mostly felt really low (almost like she was kicking me in the vagina haha). Now the last couple of days, she's been pretty quiet. Have felt little kicks here and there, but not as strong as she was the other day. Is it normal for her movements to be strong one day than quiet the next at this stage though? Have been told you're really not supposed to keep track until later, but should I still be concerned?
Thanks for any help