Thank you. I was googling it and kept seeing that implantion bleeding was at week 4 or 5. The only other bleeding I could find was pre labor or miscarriage. It has almost stopped now so I will let my doc know about it on next visit (May 8) and not stress on it anymore.
Spotting is normal between weeks 5-12 and maybe even further on. It is just implantation bleeding, so as long as you aren't bleeding heavily or cramping so bad you can't deal with it, don't worry about it.