I go from having good days to randomly bad days and it’s the worst. I question everything when I have my bad days

TW I’m feeling really bad about myself today. I feel like a fraud and a liar. I’ve been unable to enjoy my time with my girlfriend because I’m bombarded with my thoughts. I’ve been asking for reassurance from so many people and nothing is helping. Nothing makes me feel better anymore and I’m worried that this is just how it’s going to be for forever. I miss when I could just be happy and not overthink so much. I miss being able to get through my days without this crippling anxiety. I’m worried there’s going to be a day where I realize I have no fight left in me

Does anyone else ever feel like this? When you're having a good day without a lot of fear after having multiple days of fear, you start worrying that your good day will be ruined by fear again. It's like anticipatory fear. Anyone else get this? I hate it but I don't know how to make it stop

Does anyone else ever feel like they don’t feel “bad enough” to have OCD, or that they don’t feel “the right way” for it? Or like they’re just saying they have OCD as an excuse? Because i was so much better for like 3 weeks now and now im on my period and i started doubting again. So because of that im scared that i was feeling to good and that my fear is actually true.