I don't mean to hijack this thread, but I was wondering if someone could answer my question

I have a chronic illness and I'm worried it could affect ctb a little.
my concern is not that chronic illness will make sn not work for ctb, otherwise ppeh would have mentioned it.
my concern is that it may cause extra discomfort.
Because it is only discomfort, it's fine if that's all that stands between me and ctb.
But I am concerned my chronic illness could make discomfort either a lot worse, or make throwing up more likely (to the point it could cause failure)
What my chronic illness is has not yet been diagnosed, but it is neurological in nature for sure, and I have been told it puts me at a very high risk even for being in my 20s for strokes and cardiac events.
It is probably neurodegenerative
I get severe headaches from it, which already cause nausea
Are there any extra steps I should have to take in order to ensure vomiting doesn't make ctb fail, or to make sure I don't have unnecessary suffering?
As I don't have a diagnosis and I'm not a doctor or medically knowledgeable I do not know myself, so please let me know if there are any extra steps I should take