at the least inform your gynec. a checkup usg scan maybe ordered

Plz contact ur doctor immediately... Last year I had the same problem and had a missed miscarriage

talk to your doc. last year it happened to me...I had miscarriage

thank so much..

No a small brown dot like that is not a cause for concern. It can be from any thing including bowels or maybe a little dried blood from the time the placenta implanted or an abrasion in the cervix. Relax but it's also great that you are alert.