What Are The Side Effects Of Levonelle?

I had unprotected sex just on my last day period that was on the 2nd oct the next day after 2 pm i took levonelle morning after pill.. three days after I had breast tenderness and abdominal pain for 1 week and half then it become lighter, my period is due today to 25 oct I just feel light breast tenderness no abdominal pain and dry dischange.. What does that mean am I pregnet will my period come ?