should I cancel the trip?

Hi everyone, I recently got diagnosed in November 2024 and will start therapy in March/April of this year. Me and bf already had a long 3 week vacation planned in February. The trip is to Thailand. Now we are thinking about canceling it, because he is afraid something might happen or that I will have a lot of symptoms. Does anybody have any advice? Should I just go for it and do the trip or just postpone it to a year later after being settled with everything? Thank you in advance.