https://np.reddit.com/r/AmItheAsshole/comments/a1e6ts/aita_for_abandoning_my_pregnant_girlfriend/eapkfai/

Jumping off the top comment to give a sound LPT.

When you get a condom out of the box, PRIOR TO OPENING IT, try pushing all of the air in the packet from one corner of the square to the other. If there is no bubble when you have trapped the air in the corner then throw it and get a new condom. If it is punctured then the air will escape the packet when you move the bubble around.

Like why didn't I ever think of this? Male or female, we all have reason to be concerned about the integrity of our condoms. Every now and then you get a bad one even if no one was tampering with them.

The rest of the post and comments are interesting also.