Has anyone else who experienced this?

Jamie

I started to feel my twins kick and punch at 10 weeks exactly. Some days more, some less. Since I hit 12 weeks and a couple days I only feel them maybe two times a day, sometimes three. I know it's still so early but should I be worried? I was feeling them up to 10x a day before 12 weeks hit. No cramping or bleeding. Had an anterior placenta with my first pregnancy and wondering if I do again with these babies. My uterus was hanging out on the left hand side more so previously, but now it's been tugged to my middle and it reaches to my belly button now.