Is this plan b?

Took plan B last month after having sex with a condom (but the anxiety told me to take the pill just in case) and got my normal period, also took 2 tests just to be sure and they turned out negative. This cycle has been so much worse when it comes to symptoms. Had headaches, diarrhea, nausea and cramps during ovulation time, and now I’m 9 days away from my period and my boobs have started aching. All my chest, armpits, neck area, and nipples feel like hurting. All my body hurts, have some mild cramps here and there, headaches, very slight nausea sometimes and I feel tired, moody and emotional, to the point I can’t stand any noise and crying over some stupid things. There’s no way I can be pregnant since I’ve not been sexually active this month.

I also have hormonal problems.

Has this happened to anyone else, is it normal?

I’ve read the box/instructions when I took the pill and read again twice but couldn’t find anything about long-lasting side effects. Also, personal experiences would really help in reassuring.