How Long Does Implantation Bleeding Last

How long does implantation bleeding last? To find the answer, you must know a bit about how implantation takes place. Implantation occurs about nine days after ovulation and fertilization of the egg. The egg travels down the fallopian tube to the uterus. If it meets a viable sperm, it is fertilized, then tries to implant itself into the lining of the uterus.

The endometrial lining of the uterus is rich in blood and nutrients. The fertilized egg implants itself into this lining. The endometrial lining is rich in blood, and some of this blood may move through the cervix and down the vagina during implantation. This is called implantation bleeding and is a common sign of pregnancy.

What's Normal and What's Not?
Around 20% to 30% of pregnant women will experience spotting at the time of implantation. The spotting may continue into the early part of pregnancy. The spotting usually happens before your normal period would start. The bleeding is usually very light, with only a few spots of blood. The blood is also darker than normal menstrual flow. It may even be black because of the amount of time it takes to move through the uterus and out of the body.

Early pregnancy symptoms feel like the beginning of your period, so you may experience some bloating and cramping prior to and during implantation. It is usually too early for a home pregnancy test to come out positive at this point, but a blood test from a doctor may reveal the pregnancy.

Implantation bleeding generally lasts about four days, although it can last longer. Light spotting during implantation is not a cause for concern. If the bleeding becomes heavy, or if you experience a backache or severe cramps, get prompt medical attention, as these can be signs of serious complications.

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