Is It Normal To Bleed After Taking Norlevo?

Hi - last Monday (May 31st) I had intercourse with my boyfriend and thw condom slipped off. I then decided to take the morning after pill, Norlevo -within 72 hours from intercourse. I didn't experience any particular side effects until yesterday (Saturday 6th June) when I started to bleed and I'm still bleeding today. I'm bleeding quite a lot today and am worried. Is it normal ? Do I have to worry about a hemorrage ? Please let me know, I'm really worried...many thanks.