PLAN B IS WEIRD

So last month I took plan b because I had had unprotected sex (yes I know, bad idea), and I had the longest period ever. My period lasted all together about 13 days maybe more. I visited my boyfriend on a weekend about two weeks ago and I had unprotected sex again... (I know stupid). And now I'm patiently waiting for another hell of a period. Am I the only one who has had these issues?