Condoms splitting and I'm not on the pill.

My boyfriend (19) and I (18) have been sexually active for a few months now. We always use condoms, use the extra safe durex ones, check the expiry date, open them carefully, pinch the end and my bf says they aren't too big or small. And yet in the space of less than a month two condoms have split. We do not even have a lot of sex as we do not live together and are on and off long distance. Luckily both times have been before he came and not in my fertile window but it is such an unecessary stress and leaves me feeling anxious to have sex. I am quite prone to OCD thought patterns and the space of waiting from when the condom split to my period is agonising and I can't live this way. I am not on the pill as I do not want to take hormonal contraception for a multitude of reasons. The morning after pill is obviously an option but not something I want to rely on, it is only for emergencies. I have quite bad periods anyway and every contraception that I could use with condoms either has a risk of utis, isnt as effective or disrupts hormones/causes pain. Maybe I am making more of it than it is but I don't really know what to do/whether other people have experienced this. I end up having to anxiously check my period tracking app to see whether or not it is safe enough to have sex incase the condom breaks. i would really appreciate a fresh perspective. it feels bizarre sharing something so personal but thank you so much for reading x