Per your first question, it's possible that your cervix is being bumped in that particular position. Make sure you're fully aroused (even have an orgasm first) before intercourse, and see if that helps. It may also just be that that position isn't comfortable for you, and that's fine. Not every position is great for everyone, it's just another way in which we're all unique.
As for your second question: perfect use in regards to condoms means that the condom was used for all genital contact, and did not slip off or rip/tear. With perfect use, the effectiveness is up around 98%.
-------------------- "Another world is not only possible, she is on her way. On a quiet day, I can hear her breathing." -Arundhati Roy Posts: 5799 | From: Canada/Australia | Registered: Sep 2004
| IP: Logged |
Copyright 1998, 2014 Heather Corinna/Scarleteen
Scarleteen.com: Providing comprehensive sex education online to teens and young adults worldwide since 1998
Information on this site is provided for educational purposes. It is not meant to and cannot substitute for advice or care provided by an in-person medical professional. The information contained herein is not meant to be used to diagnose or treat a health problem or disease, or for prescribing any medication. You should always consult your own healthcare provider if you have a health problem or medical condition.