Period skipped a month?

An

So on January 6th I had a mishap with a condom, so I took a plan b day after pill. About a week later I got my period. I wasn’t concerned because I’ve read that plan B induces a “false period” with all he hormones it has. I haven’t had a normal period since then. Now it’s March 9th and my period is 26 days late! My pregnancy test was negative, I’m having all kind of weird hormone problems like acne and insane cravings one day and then not wanting to eat at all the next day. I know plan b is suppose to mess up your body, but it’s been two months! Is this normal?