Coming off the pill symptoms like pregnancy 😩

I came off the pill on 17th sept, had withdrawal bleed and felt fine first two weeks. Since I’ve had constant headaches, never slept as much, sore boobs for a short period of time and regular headaches. Is this normal? I took a test and was negative. (sorry dont know all the lingo yet!) and came on period last Friday so I know now I can’t be. Although it is very light and everyone says your periods are supposed to be heavier? Is this normal anyway? Feeling crap 👎