Can a condom be used for one who has been mekayim pru urvu (according to all opinions) and if not what is advisable for a women that cannot use pills or an IUD?

I am not sure exactly how to ask these questions, and I realize it may sound stupid (believe me, I can come with some that are truly stupid). As I understand the Law, when a person makes a sin offering, they are to put their hands on the head of the sacrifice and make a confession before the priest, then the offering is killed. What sort of confession was made (was it the specific sin, or just a general statement like 'I confess I have sinned')? Would it be possible for someone with no sin to make a valid sin offering? Finally, after a woman gives birth and completes her time of seperation, she is to make an offering. This offering includes a sin offering. What sin does this offering cover? Thank you for your time, and I look forward to your answer.

Follow up to my question are there morals outside of Torah?Rabbi Laufer basically said there are none.Are you saying that without the Torah murder might be ok and stealing wouldnt be wrong?Are you saying that besides the 7 laws of Noach nonjews can do whatever they want ?Doesnt the Rambam say otherwise?Thanks

Yesterday I submitted a question about what happens when a kohen's non-Jewish spouse converts. I have found an answer in Rabbi Donin's book "To Be a Jew." I tell you this so you can spend your time on other people's important questions instead of mine, which is now answered. Thank you for any time and trouble you devoted to my inquiry. I think your service is very valuable, so you should feel very good about providing it to people.

Yesterday I submitted a question about what happens when a kohen's non-Jewish spouse converts. I have found an answer in Rabbi Donin's book "To Be a Jew." I tell you this so you can spend your time on other people's important questions instead of mine, which is now answered. Thank you for any time and trouble you devoted to my inquiry. I think your service is very valuable, so you should feel very good about providing it to people.