Hi Egbert97,
I'm so sorry you are going through this I understand how hard it is.
From my lived experience of severe anxiety OCD I went through something really similar in regards to the spiral you are explaining.
I was stuck in the vicious cycle of OCD this cycle can be unrelenting until you learn what it is and then how to break free of it. This is something you need to be taught we don't just know what it is and how to disengage.
I feel very grateful that I was able to attend an OCD clinic that specialised in OCD, the health professionals that where at this clinic were amazing and new exactly how to help me.
I was taught many tools and strategies at this clinic it took perseverance and practice to master these skills but now that I have mastered them, it was time well spent because I'm now free of the vicious cycle of OCD.
Two of the stages of the vicious cycle of OCD is annalysing and also rumination, I believe from what you have described you are annalysing and ruminating I believe you are getting stuck here.
You can learn when you are doing this and then disengage by simply bringing your attention back to the present moment..... it takes practice to become aware when you are doing this... meditation is very helpful for this, do you practice meditation?
I understand that you have a strong fear, I also had this but this was also part of my OCD cycle because I was catastrophizing, I also feared I wasn't going to get out of the cycle. Please know this is part of the cycle so when you find yourself doing this try to disengage by bringing your attention back to something in the present moment.
OCD is a vicous cycle but you really CAN learn to break free of it, I have and YOU CAN.
I'm sorry you have experienced breakdowns I also experienced these they are horrible, I believe the intrusive thoughts are part of OCD I understand how debilitating they can be they can really stop you in your tracks.
In therapy you can learn how to challenge these thought and move past them or simply just learn to watch them and not get caught up in them.
I'm also sorry that your medication didn't help you, you could discuss medication again with your gp if you want to.
I was put on a antidepressant to help me with my anxiety and I also did therapy I believe both go hand in hand.
You could also discuss with your gp about options for therapy in your area, I believe OCD is a specialised area.
Please ask me anything you really can learn how to manage this and also master it.