Here's the history.... My boyfriend and I were having sex on day 3 (September 20th) of my cycle, still on my period, we were using a condom, he ejaculated and when he pulled out he said the condom had broke. Within 3 hours I took Plan B One-Step. My periods usually run approximately 30-31 days. It's now October 21st and I am four days late. I usually "cramp" a little before I start my cycle, but nothing like I've been experiencing. Between yesterday and today I've been experiencing off and on lower left pelvic pain that gets worse when I stand, a little nausea, loss of appetite, it does feel tender to the touch in the LLQ. I've been stressing a lot because of course I am worried about pregnancy, that's why I took Plan B in the first place. I know stress will delay a period and so will take an emergency contraceptive; however, I'm concerned about the pelvic pain. Does anyone have any advice on what I should do?