Does Plan B work if ovulating?

I kind of was raped so I had told my mom and she bought me Plan B, even though the guy said he didn't cum in me. I waited a day to tell her because I was so scared of what would happen. I took the pill in less than 48 hours, but when my mom looked at my tracker on here, it said I was right in the middle of ovulation. 
It's been a little over two weeks since I took Plan B. My breasts are swollen and sore, especially the nipple area. I've been cramping a little bit all day too. I've been really moody too and super tired. (I realize these could just be PMS symptoms but I thought I would list just in case)
Side note; two days after I took Plan B, I had to stay home from school because I was cramping so bad.