So, I had unprotected sex two weeks ago and took plan B 4 hours after the deed. this is not my first time taking plan B and I usually get my period a week after taking the pills.

Im worried since I didnt get any spotting or w/e, but 3 nights ago i had sore breasts and lower abdomen was going crazy(didnt have those side effects before) im just worried that i might be pregnant.

Also, i've been very stressed lately, new sleeping schedule and was doing strenuous exercise for the past month. I also used to have irregulars periods.
I think those can also afffect my period right?

PLEASE HELP. THANK YOU :)