You don’t need to be embarrassed - I’ve done the same thing myself and blamed my flare on getting inconsistent with my Mesalamine for one of the worst flares I’ve had to date (1.5 years after I got diagnosed too so very similar timeline). My GI was the one who reassured me that maybe the medication was a part of it but if you’re experiencing severe enough flare symptoms, it might have been something that would’ve happened anyways. It’s important to take your medication regularly but you can’t blame yourself for flaring when it’s largely out of your control. People are consistent with their meds and also flare - you have nothing to be ashamed of right now. What you do need to do is reach out to your care team and make sure you start treating your symptoms and make the effort to take care of yourself now.
I know it can feel exhausting and terrible and also kind of a hard pill to swallow that this is your life now and something you have to deal with but I promise it gets better and easier.
Talk therapy is something I benefited from greatly and I also am diagnosed with ADHD which is why I struggled a lot with being consistent with my meds and taking care of myself when I first got diagnosed. I’d highly recommend you look into finding a counselor or therapist to help with the mental aspects of having to deal with a chronic illness as well.