So OCD and trying to challenge it is at the forefront of my mind but I think this is making it worse but if I dont try to challenge it then it's probably just going to maintain itself or get worse so what should I do?

Thanks that's good advice. Even a simple thing like closing the fridge door triggers it, I have a sudden urge to open and close it again repeatedly until it feels 'just right'. Part of my brain knows that if for example I did leave it open then it's not the end of the world but the pure discomfort at the time is so hard to dismiss.

@AnushLDN I used to do this just-right OCD with switching off my light and closing my bedroom door in the morning to go to school when I was a teen. It's rough to deal with that discomfort. The fact that I was always running late in the mornings anyway was the only thing keeping me from doing it very repeatedly as I'd be forced to leave it to go catch the bus, I think the max I ever got to was 3 times. But that discomfort isn't going to kill you. The fact that you're mindfully resisting doing it might make you feel worse but that's good in a sense, that's where the treatment process starts. The more successful times you have of not doing the compulsions despite high anxiety, and riding it out until the anxiety goes down, the weaker the need to do it will get. I wonder whether as Melkate said, some compulsions are sneaking through and simply replacing the action with other things designed to reassure you (checking that it's closed, telling yourself that it's definitely closed or that it isn't the end of the world if you left it open or didn't do it right) or which only increase your distress (ruminating, or obsessing about another issue). Another compulsion can be just imagining that you're doing the compulsion, in your own head. As far as your brain is concerned, that's almost the same thing as doing it for real, so try to avoid it. Let the anxiety get BIG BIG BIG, and then survive it without any compulsions including mental compulsions.

I feel you. When you don't feel up to it, use the worry later/worry period method. It's important to put distance between the triggers/urges and the compulsive behaviours. If you can't embrace the uncertainty about whether you're blameworthy/process the guilt all the time, and none of us can, it's super important not to undo your hard work by doing compulsions the rest of the time, including ruminating. That's why the worry later technique works so well. You start getting your life and time back right away by promising yourself that you'll address the issue and figure it out, you won't neglect it or forget about it but you're going to deal with it LATER, not right now. There's more info online. Even if you do end up ruminating etc during your allotted worry period, you've still put a whole lot of distance between the trigger and the compulsion, so your brain continues to break that link and not associate the two of them: you've successfully shown your brain that it wasn't urgent, and that can go a long way. It ensures you don't undo your ERP or make it a waste of time. You already recognise that making mistakes or not being perfect doesn't make you an awful person, which is great, some people struggle with even recognising that intellectually, and so you've quickly noticed that the level of guilt is inappropriate. That was actually the first clue I experienced too when I was starting to realise there was something up with my brain- I really knew "some guilt- yeah sure, but this level is just not normal, this is silly". That knowledge will hopefully give you strength to keep treating the OCD, so long as you don't use it during anxiety or guilt as reassurance that your concern/feelings aren't accurate.