Hey everybody, I would just like to get anyones experiences with Levonelles, as right now I'm freaking out.

I had unprotected sex 20.6.14, just 2 days after my period has ended , it only lasted a few minutes as we both realized it was a really bad idea, he didn't cum in me. 60 hours later, on 23.6.14, I took Levonelle. On 27.6.14 I had a light bleeding, which got heavier and lasted for 5 days. I've read that this is quite normal. Now, on 30.7.14, I still haven't gotten my period. Is this normal? My breasts have been quite sore for about three days now also. 

Could anyone please tell me if I should be worried about pregnancy? And also share their experiences with the drug.