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 is generally very light and lasts a very short time. Occurring sometime between 10 and 14 days after the fertilization of an egg, implantation bleeding happens around the s... More »

Typically implantation bleeding does not contain clots and consists only of very light spotting, according to About.com Miscarriage and Pregnancy Loss. Clots are more commonly present during a regular menstrual cycle. Th... 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 »