Its different for everyone. I didn't get any at all (i'm 14 weeks pregnant), but some people get as much as a normal period.

Ok, now I have another question.
Now (it's the next day and i'm bleeding alot) as much as a period- w/ cramps? What does this mean? I really hope it doesn't mean i'm having a miscarrige . . . But does anyone know why that would be? I mean, could I actually be pregnant? And bleed? And have it not affect it if I were to be preg.
But I also had craps- I dunno I guess all I am asking is if I could possibly be pregnant due to all that info- please w/b/s!!!!!

Everyone is different, I was told by my nurse that what I have experienced is implantation bleeding and not a period, on the due date of my period all I had for that day was loads of thick mucus laced with blood the following day I had a day of bleeding but it was different in that it was lighter a mixture of red dark red and sludge brown blood also mixed with mucus. My nurse told me this was implantation bleeding as usually I bleed for about 5 days. I have all the symptoms of pregnancy nausea, sore/tender boobs with protruding veins fatigueness, constipation and also the odd cramping which I am assuming is due to my constipation. Let me know how you get on and if anyone has experienced similar to me etc