hi guys.I am really worried.

I had unprotected sex on 26 October 2013 with my boyfriend as condom broke. After 3 hours of unprotected sex I have taken iPill.

On 12 November I had my periods but they were very light as compare to my usual periods. I still feel like nausea, vomit and I feel nausea in the morning mostly or after taking lunch.

Please let me know is this the effect of iPill or is there is something else? and the periods which I had was my normal periods or just a vaginal bleeding?