I felt mine move this pregnancy at about nine weeks the first pregnancy was about 14
I'm 12 weeks and this is my 2nd baby and I started feeling like I was feeling it a couple weeks ago too. My first pregnancy I didn't feel him move till 19 weeks.
I can tell the difference between that and gas
I'm on baby #3, I'm a day shy 11 weeks and I know I've been feeling baby for a few weeks! Even the ER doctor told me I was probably right because of how active the baby was on U/S lol Also, from what I've been reading on here and other groups/apps, it's not that uncommon to feel baby early in 2nd or more pregnancies :) although a lot will argue that it's gas lol but I'm sure most of us know the difference :p