I’m 20 weeks and haven’t felt baby kick much

Ashley

I’m 20 weeks and have only felt very few flutters.. I have a 1.5 year old and I feel like I felt him kicking a lot earlier and harder. Is this normal for pregnancy in general or is it normal for a second pregnancy to seem more un noticeable?? I have an ultrasound Monday for the anatomy scan and such!! And my last apt the baby’s heart rate was 143. They said everything seemed normal and healthy.. I need your experiences and opinions please!!!