Fantom flutters vs. actual baby

K

Ever since I had children (1st child was 12 years ago when I was 18) I’ve had fantom flutters. I had my 2nd child at age 26, about 4 hrs ago. They got stronger after her birth. I’m pregnant with my 3rd and I still feel these flutters every now and then but like HOW in the world do I know if it’s actually because of my baby or not? I’m so confused lol btw I’m currently 12 weeks.