I had the same reaction when my research began to point towards OCD and then to have it confirmed by a medical professional? I'd been devastated and afraid of what the future held for me. Especially with how severe things were back then for me. I'm sorry that you're in a similar spot now, but while OCD doesn't have some sort of miracle cure, it's treatable to a point where it's BARELY, if at all, noticeable. If there's one thing I've learned, it's that it's manageable, and recovery is 100% possible. OCD can be triggered by changes in routine or major events, so it makes perfect sense why it's worsened.
For general advice, I'd say be patient with yourself. Recovery isn't linear, and you will have good days and bad days. When you first embark on this journey, it might feel like you're taking one step forward, two steps back, and that's okay! I'd also recommend looking into different compulsions and identifying which ones you perform, and then practicing preventing yourself from doing them. Compulsions, like reassurance seeking, bring temporary relief, but they do more damage than good in the long run... This is going to be one of the key things to work on! :)
ERP therapy (Exposure Response Prevention) is the gold standard for OCD treatment. If you can't afford to see an OCD specialist who is trained in ERP, don't worry. There's a lot you can do at home. For example, there are YouTube channels that speak on OCD or articles published by NOCD that can be helpful. Nathan Peterson on YouTube is who helped me understand this disorder and how to handle my thoughts and obsessions when I first started looking into OCD being a possibility. He has a playlist for almost every theme of OCD on his channel with specialized videos for that theme, and he even has tips on how you can practice ERP by yourself.
Lastly, just practice self-care. Get good sleep, eat balanced meals, stay hydrated, exercise (go on walks, dance, go to the gym, etc...), treat yourself! Don't let OCD prevent you from going out and living life, even if it's tough. It's okay to show up fragile, and it's okay to lean on others. Surround yourself with loved ones, spend time on hobbies... Journaling also helped me a lot. I'd write my thoughts down when I needed to and use it to keep track of my progress.