Hi guys

My boyfriend and I had unprotected sex about 4 days into my period (I usually have 5-6 day long periods). He did pull out but we weren't sure whether he had done it fast enough and just to be safe we decided to get Plan B. The pharmacies were closed at the time so I went in the morning and got the pill. It was still within 24 hours so I assume that it was effective. However, about 5 or 6 days later I started spotting, which lasted about 5 days. Is this normal? I haven't had any other strange symptoms but was worried whether it was possible that I ovulated early and it was implantation bleeding. If this is normal when should I be having my next period?

Thanks a bunch,

sunshine