Rare symptoms

I took the morning after pill on the February 14 and the next period was okay.

The second period after that came 6 days earlier!

Now it's about a week later and I'm constantly feeling these symptoms like sore breast, two days I've been feeling really tired and today I felt kind of sad out of nothing. Plus I was supposed to have my period today if it wasn't because it came earlier. Please comment.

I'm kind of scared, not because I'm thinking I'm pregnant or something like that (because I had sex without penetration- we both had our underwear on) I'm scared because I don't know the reason of these symptoms

Is it possible that it is because of the pill? Even almost two months later that I took it?