Implantation bleeding takes place when the egg fertilizes itself into the uterus lining, which has millions of capillaries. This kind of bleeding starts from the day of ovulation, and continues for up to 10 days. It does not necessarily has to be bleeding. The discharge can be in small quantity or drops which is generally referred to as implantation spotting.
This bleeding, in other words, occurs about 5 days after the fertilization of the sperm into the ovum. It usually takes five days because the blood travels from the small size of zygote and fallopian tubes. Also, it has to flow from the tubes to the opening of the vagina.
The color of implantation bleeding depends on the amount of blood discharged. It is not similar to the blood discharged during period. However, there is no definite color. If there is heavy implantation bleeding, the color will be red or pink. But if the discharge is minimal, it will be in the shades of brown. If such small amount of bleeding is occurred, it is not a concern of worry. It shows that the egg has been fertilized properly, and it is taking time for the blood to flow from the tubes.
Many doctors might advice to take extra precautions looking at the color of implantation bleeding. Many might also term this bleeding as not normal. However, it is a completely natural occurrence. Even if this bleeding causes cramps in the lower abdominal area, fret not. The duration of this bleeding ranges from a few minutes to two days.
Since, not many are aware about the general color of implantation bleeding, some perceive it to be a sign of miscarriage, while other feels it is a change in their menstrual cycle. Some also believe that this might be bleeding due to physical or mental stress. However, for women who are not expecting pregnancy or are trying to avoid it, such bleeding can be a shock.