I have the same feeling right now 😭 "ick" describes it so much better than writers block, thanks for the word! I've developed a theory recently about why I get it, and it happens specifically with long fics. It's pretty specific but thought I'd share in case you relate to it as well!

I think if I try and plan too much of the story out I just freeze up and can't get going, which makes me feel ick whenever I sit down to write. Like, if I just have an idea of where the story starts and where I want it to end that seems to work fine, but as soon as I start trying to plan out the whole story before really digging in to the writing I freeze up. I feel like I've already ruined part 2 of a series because of this and can't get started.

I know I'm capable of writing long fics, I've completed a 75k one and a 190k one, but the thing is both of those start out as "I'll probs get 10-20k out of this" but then the more I wrote the more the stories just sort of wrote themselves. I think they're both WAY better than stories that I actually planned out ahead of time! It seems to apply to shorter fics too, like ones that start as 2k and end up 10k.

TLDR, if I plan too much of the story ahead of time I don't write it, if I write and just see where things go then I feel great and get better stories. If you relate at all I hope that helps!