We never had sex but want to try it in the near future. I heard a condom by itself is not totally safe and my girlfriend doesn’t want to use oral contraceptives. But are we well protected if we use a condom and I withdraw my penis from her vagina before coming?

When people use only condoms 2-12% will become pregnant within a year. So it’s true that you cannot really rely on condoms. If you combine it with the withdrawal method you are very well protected. There are other possibilities as well. Your girlfriend could have an IUD inserted, use a diaphragm or try the nuvaring. But the way you’re planning it now is very safe.