Eight days ago my boyfriend and I had unprotected sex. I was able to attain Plan B a little less than 120 hours after we had sex. It's only been eight days and it's been about two days since I've taken the pill. I am experiencing tender breasts and a dull pressure on the left side of my abdomen, as well as constipation. Is it too early to be experiencing pregnancy symptoms, as could it be a result of the hormones I ingested? Please help.