Movement at 7 weeks!? Can’t be possible!?

So this morning on my school run I was sat in my car and felt 2 tiny tiny little kicks. I didn’t think anything of it I just thought I was a twitch but felt very strange! Now I’m currently laid down and the right side of my belly (only a small area) keeps mildly tightening and when it does I can see it raise up a little, I can feel movement?! It’s my second child but surely not!? I’m only 7w+1d from what I calculated I didn’t expect it! But this definitely is not gas bubbles I know what they feel like and it’s definitely not them or anything I can really feel movement. Surely not though?! Anyone else had this?? Feel like I’m going crazy!