Baby moving? 15 weeks

Ashton💁🏻 • 18, baby daughter born 11th July 2016, in a relationship ❤️ uk
I have just felt for the first time on the lower left side of my stomach at first it was like a faint throb then feeling like something was moving inside and then fuzziness, could it be the baby moving, I'm laying on my side and it's the side I'm not laying on, I have been worrying as not felt baby yet, could this be them?