Since this is becoming a bit of a review of STD and birth control facts, I thought I would chime in on a few other bits of info, according to my understanding. There are two STDs that a woman can have internally in her vagina and may not be aware of and that can be transmitted to her partner. They are herpes and venereal warts. I don't say this to be a bummer, just in the interest of complete knowlege, which is hard to get.
Also with regard to oral contraceptives, she (and you) should be aware of the things which can nullify the effectiveness of them. They can include things such as some antibiotics and even grapefruit (!). Do some research and be informed on them. Not all doctors inform patients taking the pill of the substances which can take away the effectiveness of the pill. Also, my girlfriend once got pregnant on the pill because she had heard that when you forget one day you can take two pills the next day, but she forgot two days and then took three the next day after the two days she forgot. She got pregnant.
I don't want to bum you out. All things of value have some risk. You are being really prudent and for that you should be congratulated. Just wanted to complete this little tutorial. Now go enjoy one another and give each other the beautiful gift of yourselves!