Birth control question

So I’ve noticed something and it honestly took me this long to notice😅 I’ve been on the same pill for almost a year now and it’s been making me feel like crap....but ONLY for the first two weeks of every new pack. And obviously the week of my period. So really I only get like one to one and a half weeks where I feel great without moodiness, headaches, stomachaches, and pimples.

So is this normal?? I’m switching to the IUD because I feel so crappy most of the time, but I was just wondering if it was normal even after almost a full year.