I'm living with my boyfriend... every time he used condom... as far as we know there never happened breakage of condom... is the condom 100% safe?? From last six month I haven't get my periods(ma period is irregular from starting.. comes every 2-3 months).. am I pregnant?? I have done pregnancy test at home more than 10 times... they all are negative...

No the condom is not 100% safe, in fact, no form of birth control is 100% safe. The only sure way not to get pregnant is to abstain from sex.

Are you pregnant? I don't know, there is no way for me to tell over the internet. However, if you haven't had your period for 6 months, and the tests are negative (assuming you are using them correctly), it is time for a doctor's visit.

No, condoms if done perfecty have about a 97 percent effective rate.

Don't have the site, but the est is as used by most people, the over all rate is about 90 to 92 percent effective.

So a condom alone is not 100 percent. In fact there is no 100 percent effective except not having sex.