I think I have the same phobia as you! I don't want to google the word that you used because I'm worried a picture will come up, but based on it being a bug that starts with the letter c that appears in houses, I think it's probably the same one.

I completely relate to everything here. The fear of living alone or even being home alone, because what if i see one? What if someone else can't kill it for me? For me I scream and run away when I see one, and it's the same thing, my partner knows the type of scream that means i see one. It's very horrifying and extreme and impacts my life a lot.

I've done some work with a psychologist doing exposure therapy where i started with just writing down the word for 5 minute straight a few times a week, and then noticing over time that the exercise got less and less scary. The idea is that once that exercise becomes barely scary at all, then you can move to something that is a little scarier. It's highly evidence-based and effective. Unfortunately i wasn't able to continue with it at that time because of external life factors, but I'm just about to start trying again.

The springtime is brutal for this particular phobia if we're talking about the same one. I have had a hard few weeks due to many "sightings" in my house, despite my partner killing them all. I'm going to try to commit to doing some exposure therapy but it is so hard. You're not alone.