Confused...

Hi everyone so I’m freaking myself out. My period usually comes on a Tuesday and this week it came on Wednesday morning. I only bled Wednesday and Thursday and it was gone Friday. I have noticed they have been getting lighter because I have been on the pill for over four years. I think I’m freaking myself out bc my boyfriend typically doesn’t finish me and if he did it was on my last period. Should I be worried or does this happen on the pill??