19 weeks 2 days. How often do you feel baby move?

Second baby here- but with my first i had an anterior placenta so I felt nothing until like 25 weeks. How often should I be feeling baby each day. I say I feel flutters and movement like 2-5 times a day. It’s not consistent at all. It’s more like I feel baby moving and shifting. I know everything is fine I’m sure- it just worries me. Next week we have our anatomy scan, but we aren’t finding out. Just can’t wait to see baby again!