Always been chronic, the frequency has simply changed for me, the fear seems part and parcel with ch, fear of the pain, fear of the next, fear it will be worse, fear when you get a longer break than normal because you think it will come back worse, fear a treatment will not work, fear it will then stop working. On and on they go, many of these are the same mind treadmills that you get with ptsd, I mean subjected to unimaginable pain for upwards of hours, to get a respite, knowing it is coming agai, sometimes with no rhyme or reason, sometimes fearing the simplest things could trigger.
For me, trying to focus on the now, helps in between attacks, guided meditation helps calm me, even the mindset that this could be as good as it gets helps in some ways then you turn to coping with what it is right now and not what it might be later.