I had protested sex on 23dec and had last period on 10th dec.. out of worry I took 2 unwanted 72 in 12 hours gap.. since then I had no pain or any other effects.. and no bleeding.. is there any chance that I am pregnant

'Chance' of pregnancy is always present when a woman has sex. It is impossible to give a %. Symptoms don't really help, because pregnancy symptoms and menstrual symptoms are so similar, and some don't mean anything at all. And worry can increase symptoms.

Remember - whether your chances of being pregnant are .001% or 99%, if you are in the group that is pregnant, you are still 100% pregnant. And those percentages are just approximates anyway, from some statistics and studies, and there is no way to really tell you what it is for you. There are too many variables.

Yes, the "unwanted pill" is not 100 percent effective so you could be pregnant, ovulation period, sperm count and even luck will all effect. So there is no way to say odds, it is always 50/50, either you are or you are not.

The pills are not to be taken too often since they can also cause harm to the body when not taken correctly.

They will also often alter and delay your next period or two