Hi @jTan, this is a good question. The male condom does not provide 100% protection from pregnancy. With perfect use its 98% effective however with typical use in real life its only 85% effective in contraception. A more reliable method of contraception would be Longer Acting Reversible Contraceptives or LARCs.
Hi @jTan have you and your girlfriend spoken with a doctor regarding the pregnancy and confirmed that she is in fact pregnant – sometimes those at home tests aren’t 100% accurate as far as I know.
As for condoms – as @Nurse_Nettie they aren’t 100% guaranteed. There are also preventatives your gf can take to help reduce pregnancy risk – she can discuss these with her doctor also – this is stuff like ‘the pill’ or implants. Check out NN’s link above for some info.
Hi @jTan, welcome to PlaySafe. That must be really overwhelming for you. No doubt finding out your girlfriend is pregnant when you thought you were using appropriate protection would have been quite a surprise! What did the doctor say? They would normally have some information about what to expect that they can provide you with when confirming the pregnancy. Alternatively, like @CloakOfAsh said, if you haven’t yet been to a doctor that would be a good first step. Let us know how you’re going.