Baby moving?

Sabrina • Baby boy born Oct. 2015. Baby girl born Jan. 2020. Baby #3 due December 2022. C-Section Momma. ❣️
I'm 13weeks5days pregnant. I sometimes feel thumps in my lower belly and then some flutters. It's definitely not gas and I'm wondering if this is baby moving around? It seems too good to be true! lol