It's different for everybody and can depend on where your placenta is. With my first, I felt internal movement about 18-19 weeks. With my second, I felt internal movement at 15 weeks.

It's definitely different for everyone and if you have an anterior placenta you could only feel movements later on. For me I started feeling movement from inside at 19/20 weeks with my first but only at 21 weeks with my second. From the outside I could only feel movements from 27/28 weeks with my first and my second already at about 22 weeks. Both pregnancies I have had an anterior placenta.