Hi,
I am a female of age 19 years.I had sex with my partner on during periods.exactly on the third day of my periods.what are the chances of getting pregnant ? I had sex on 27th of October 2012 and my periods finished on 29th of October 2012.

The chances are 'low.' There's no exact %, and what good would that do? Let's say it's 3%, and you happen to fall in that 3% group. You are then 100% pregnant.

Get birth control. Even the best ones aren't 100%. Women have conceived on the pill, patch, tubes tied. The odds are way below 1%, but there are about 2 billion fertile women in the world.

Chances are slim, but still possible, You will have to just wait till next months period and see what happens. This is can happen, out of the 1000's having sex during period each month, but will you ? Just have to wait