I say stick with condoms - for the birth control protection if nothing else. If she stops taking the pills, and gets pregnant, you'll regret it - unless she gets an abortion, which she probably won't because she wanted a baby. It's happened to many, many people and I've known more than one guy whose life was basically ruined for 20 years by this type of situation - not to mention the others involved. I came very, very close to being a father myself a few times when I was younger, but was lucky. Don't risk it - use a condom, even if she says she's on the pill. This way, you're covered (literally).