A condom is not only useful in preventing pregnancy but also std's and you need to be concerned about that as well. There is no reason to have sex without protection. There is too much out there to even consider it. Judging by your question I am guessing you are really young and the fact that you are even asking this question tells me you are not mature or responsible enough to be engaging in sexual activity. You need to be careful.
Just be 2careful ther are s.t.i s
Really how stupid can you be... ITS NEVER SAFE!!!!
Good Luck:)
There is no 'safe' time to have sex, as the above person said. If you don't want to get pregnant and still want to have sex, then use another form of birth control. You can go on the pill, get the depo shot, get the implant, etc. All options of what you can use. Find out what would work best for you, and then use that.
if you don't want to get pregnant don't do it. there is no "safe" time to have unprotected sex. it's like playing Russian Roulette...eventually you will loose.