Baby movement..should I be worried?

So I'm 24+1 with my second baby and been feeling bumpy kick since 19 weeks and flutters since a lot earlier on. 
Well I know her pattern and she is normally super active but today she hasn't been that active at all. Normally she doesn't stop flipping and kicking. I've felt her probably 10-15 times in the whole day and normally I feel more than that in half an hour when she in her active time. 
Should I be worried? 

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