Condoms are 99% effective but all it takes is that 1% or it breaks and you're pregnant! The best combination is condoms and Birth Control pills.
http://wiki.answers.com/Q/Do_you_have_to_us_protection_even_though_your_boyfriend_is_using_a_condom"
If you want to prevent pregnancy and the possibility of STDs, you don't! He is being responsible for you and himself by always using a condom.
Yes.
No, if you used the condom correctly that was enough to prevent pregnancy.
If you are using protection (ie. condom) then pregnancy is unlikely to occur. However, no protection is 100% effective so if you miss your period you should take a pregnancy test
There is always a chance that pregnancy can occur if the condom broke. Sorry. There is sperm in the liquid that comes out while having sex. So, yes if the condom broke there is a chance of pregnancy, but not from the previous ejaculation Unless of course you are using the same condom which you should never use a condom twice.
not using a condom
The protection level using a condom is about 86% ... meaning there is a 14% possibility of the condom failing, rupturing or tearing.
Yes. The condom could malfunction.
by using a condom
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pregnancy, STDs