Can implantation bleeding happen only once? my period is due in five days. seems i ovulated about seven days ago. earlier i had brown discharge and three drops of brown blood on my underwear, nothing since?

HPT: Bleeding does not usually occur with implantation. When bleeding does occur it is usually minute amounts. If your period does not arrive when anticipated, would take a home pregnancy test. Take care.

In my experience, implantation bleeding can vary. As a doc who delivers babies, I had so much implantation bleeding I thought it was a period such that I didn't realize I was pregnant until 9-10 weeks along. A pregnancy test as early as 3 days before your period can be helpful!