At implantation is how many weeks pregnant?

At the beginning: In one aspect pregnancy does not occur until an egg has successfully implanted in the womb. This is a few days after conception. In fact as many as 1/3 of conceptions may fail to implant for a variety of reasons & are thus never considered a pregnancy. The markers for a positive pregnancy test are created by the mass of cells that develop after implantation.

1 week: Pregnancy takes place when ovum becomes fertilized, and implantation occurs about 4 to 5 days after fertilization.

Depends: It depends on how you count. If pregnancy is counted from the first day of the last period, it is about 2 weeks. If you count from the time of fertilization it is about a week. Have a healthy diet, exercise 30 minutes/day, drink plenty of water, have safe sex, no tobacco alcohol weed or street drugs. For nutrition: http://www.choosemyplate.gov/. Get HPV vaccine. Wish you good health!