Implantation bleeding can potentially be confused with the onset of the periods. However, the distinction between the two is very obvious and should hardly be the reason for any confusion
Why The Potential Confusion?
The primary reason why an implantation bleed can be potentially confused with a period is because both occur about the same time. Implantation bleed occurs about day 10 to 14 after fertilization ( roughly ovulation day) and periods are also expected about 14 days after ovulation day for a 28 day cycle.
Remember that these numbers will differ if your cycle is not 28 days.
Implantation Bleeding Or Period?
A early scientific study concluded that the traditional belief that implantation bleeding can be confused with the periods is not true. This was because implantation bleeding if very different in characteristics from a regular period.
These 4 points can help solve this difficulty
Spotting during implantation is usually so small that it appears as stains on the panties which you cannot mistake it for a period.
Implantation bleeding usually last for one day or last most two. It will be unsual for this kind of bleeding to last more than two days
The time of occurrence
For most women, bleeding during implantation occurs way before the expected menses, about 7 days earlier. However, a few women might have it very close or even on the expected day of menses.
Implantation spotting does not have the usual color of blood but appears as a pink or brown vaginal discharge. A period will have the color of your usual periods!
Am I Pregnant?
There is no implantation bleeding without pregnancy! You should therefore do a home pregnancy test as soon as possible.You may need to repeat it in about 5 to 7days if you think you tested too early.
You may want to review very early pregnancy signs if you are considering the possibility of pregnancy.
Harville EW, Wilcox AJ, Baird DD, Weinberg CR. Vaginal bleeding in very early pregnancy. Hum Reprod 2003; 18:1944.