Does your baby slam their legs down a lot?

My PPA is getting the best of me, does anyone else’s LO around 5-6mo aggressively slam their legs down while on their back or twirl their feet. As well I’m anxious about my little one arching her back and getting fussy randomly which she never did before a few days ago. Mentally I’m not doing great today and just need to hear that other babies do this too.