17 weeks movement

So I started feeling the first movements around 15+4, and have felt them everyday now since 16 weeks. I'm 17+1 now and everyone says I should be feeling flutters, but these movements are a lot stronger than that. I can clearly feel kicks/jabs and when baby rolls over. Last night the kicks were hard enough that I could feel them with my hand. Baby is pretty well always in the same spot, very low, and I have only gained about 2lbs. Is it normal to feel this much movement this strongly? This is my first baby