Felt Movement At 13w1d

I felt some twitching near my belly button, have a video of my belly button actually twitching and moving then I pressed when the movement was & baby moved more to the left & you can clearly see little movements like baby was kicking on the video😱. I thought it was definitely too early to feel or see anything but guess not. I am now 13w2d, due 10/12/18. So that makes me a little over 3 months. Anyone else experience this so early? The movement feels like flutters, even the twitching.