Movement at 15 weeks

I’m 15 weeks today and I’ve been feeling flutters since last week. This morning I felt a flutter and decided to put my hand on my belly to see if I could feel her that way and I did! I felt a little thump from inside and outside.. was that her?? Or is it too early?? I’m really excited cause I have no idea what else it coulda been but people keep telling me I won’t feel her until 17+ weeks... this is my first, but I’m extremely skinny, I barley have a bump and my uterus is still pretty low. Am I crazy or was it her?