Are there more people that always feel sick or ill, like they just caught the flu, a few days before a holiday or trip? 

I’ve had this since I was a kid and apparently my dad suffered from this too as a child. 
Still, whenever I have something planned, I start feeling flu-ish a few days beforehand and it makes me anxious I can’t go. Usually I’m good the moment I’m there and distracted. 

Right now, same thing. I know I’m going to Paris on Friday. I think I’m subconsciously kind of anxious for the bus ride (because of covid etc) and now I’m feeling sick. Usually a stomach ache will kick in right before I leave. 

Am I the only one and is this preventable?