Sudden increased fetal movements at 30 weeks

Hi,

I’m 30+4 weeks and though my baby has always been super active I’ve just had 15 minutes straight where she kicked/jabbed etc at least 30 times. This is 3 times as much as she would usually move. I called my maternity hospital and was advised to not worry and that it is normal. I haven’t had anything sugary all day, on the contrary, I’ve struggled to eat today. I’m not sure if I’m just being paranoid or if it’s normal for random spurs of intense movements. Could the baby be distressed? She’s still moving but not as intensely now.