can it mean something??

Question

I always used to get my periods for a full 7 days but now that I'm sexually active, my periods only last 4 days.. can that mean something??

Answer

and I've also felt like twitching on the side of my lower belly.. what does that mean

Answer

It doesn't mean anything. I use to bleed for 8 days now I only bleed for 4 or 5 days. Our body's will change at any moment.