Why did it come back?

I’m wondering if this has happened to anyone else… I’m 28 years old. I was diagnosed with OCD when I was very young and it took a while, but I overcame it. I haven’t had any compulsions in 20 years. I’ve had some horrible things happen in the past, but nothing brought back my OCD. The only thing I struggle with is overthinking and making decisions. Im about to take a sabbatical from my work for a year to travel because the last year of my life has been by far the happiest and most confident iv ever been. I went to see a therapist a couple weeks ago who was an OCD specialist, I just wanted some tips and tricks for decision-making while I’m on my trip. She warned me that my OCD might get worse before it gets better, but I thought that she just meant with decision-making and overthinking. They have this program set out that I didn’t really wanna do but she told me it works really well so I decided to try it. It’s two sessions a week and the first two sessions were sort of just talking about my old OCD and doing questionnaires. I really related to some of the questionnaire questions, and the therapist was actively telling me that I definitely had OCD the whole time which made me feel bad. After our second session, my OCD came back full swing like when I was a child. I cant stop thinking about doing compulsions every waking second. It’s been two weeks. I’ve been to her several times and nothing is helping, I’m resisting the urge to do compulsions as much as I can and I feel like I’m fighting for my life. Nothing is helping and I’m burning out. I wake up and cry everyday because of how uncomfortable and out of control I feel. I never thought this would happen and im so mad at myself for ruining my trip. I feel like I’ve ruined my life tbh and even if I do get better, I’m always gonna be bothered by the constant fear that even at the highest and most happy points in my life it could just come back at any second with no warning signs.. I thought I knew how to deal with it and had the tools, but nothing is working this time and its ruining my life. Today I asked about cancelling my trip altogether, and I might be going on medical leave. Has this happened to anybody and do you have any tips for me?

Where do I begin with this…….. so my OCD has been around since childhood and has had many themes over the years. I only realised I have it just over 2 years ago. I’ve tried many things to help it not be such a monster and thought I had a good grip on it for a length of time until now! Some of my strategies have been acceptance, change of perception of thoughts and sometimes on hard days just telling myself that no matter what, I have to be brave and go out and live life. In the last few months I’ve developed none OCD related anxiety as well and so have been looking at ways to help with that. Sunday morning I was just casually scrolling TikTok and a video only about 30 seconds long or so comes up, seemingly a therapist of some kind, straight away the video began something like “you cannot replace a thought with another thought” along the lines of “you can’t THINK your way out anxiety” I don’t know the full context of the video it wasn’t long enough, I don’t know who the therapist was I didn’t look but now purely because of that one sentence my OCD has gripped onto it so badly and is trying to tear down some of my strategies because I have used changing my thought patterns a lot to help me, self compassion etc but now because of that video I’m struggling! I’m not looking for answers but I am just really upset and it feels like I’m in an impossible grip of OCD again

Does anyone like go through waves. Your mind is super silent maybe a couple of thoughts but you are able to brush it off? But then out of nowhere your mind just starts rushing with every thought? If so, how do you cope with this? It drains me.