My period is late and I thought the other day I may be getting them because I had a very small amount of cramping for about half a day and then on that same day I had a very small amount of bleeding (i only knew I was bleeding when I went to the bathroom) and that was it after that. I read that you can have implantation bleeding, is this correct? and if so how long does it last for and if it is implantation bleeding how long before I can do a prenancy test? I havent had any period pain or bleeding since (it happened about 4 days ago). Any suggestions?