Implantation is not heavy; implantation bleeding is very light and resembles spotting, according to WebMD. It can also be accompanied by light cramping, and women sometimes mistake this early sign of pregnancy for a peri... More »

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According to Mayo Clinic, implantation bleeding lasts for a short time and may not even be noticed. However, it can also be mistaken for a menstrual cycle. More »

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Implantation bleeding can last for a day or two in some women; others may only see a single spot of blood and others may not notice it at all, according to BabyMed. Implantation bleeding typically occurs as an early symp... More »

It is not possible to menstruate while pregnant, but the American Pregnancy Association notes that some women experience light bleeding or spotting during pregnancy. However, this bleeding is not as heavy or as regular a... More »

Although every pregnancy is different, light bleeding, known as spotting, can be seen anywhere from six to 12 days after fertilization of the egg, according to WebMD. Many women commonly mistake this early sign of pregna... More »

Breakthrough bleeding, or abnormal vaginal bleeding between periods, can be a sign of pregnancy, but there are also other factors that can cause this symptom to occur, according to WebMD. Breakthrough bleeding can occur ... More »

The most common cause for spotting and cramping after ovulation is implantation bleeding, or the process of a fertilized egg attaching itself to the wall of the uterus, according to WebMD. It can also signify pregnancy p... More »