Well implantation bleeding (not heavy and should be pinkish or brownish color, not bright red color) usually last for 1 or 2 days. some got alot spots and some don't.
go online and find out about implantation bleeding might help you understand more.
good luck
thank you
actually to day I'm really nervous because today is due date my period and when I saw the spot I just floored, after clomid and hcg shot ,I had sveral mature eggs I was worry about triple or twin but spots starting so you can imagine how I was depressing feeling to day.May be god doesn't want I don't know I cry and pray for myself