Possible to feel the baby moving already?

Liz • Mom to a 2yr old son expecting 2nd baby in Dec. Hoping for a home birth. Natural dyer & sustainable fashion educator.
I'm 12 weeks pregnant with my second baby. Today while resting I felt the baby move for the first time. I know it's incredibly early to feel anything at all and most books say that you generally won't feel anything until as early as 16 weeks but I definitely felt something and it was similar to what I remember my first baby feeling like at 17 weeks. Has anyone else ever felt movement this early? Or am I just too excited and imagining things?