Plan B side effects normal?

So I took plan B 6 days ago and from the first day until yesterday I had thick white discharge. It seems to have gone away by now. All throughout these six days though I have noticed that I have sleight cramping in the left side of my pelvis. I'm supposed to get my period in 7 days and I usually have period symptoms by now but I have noticed they aren't here yet. I know that Plan B can throw it off so I was just wondering if all of these things are normal! It was my first time taking and I never want to take it again! :(