Bedbugs happen. And it suuuuucks. After getting infested once, I’m careful never to put my suitcase on a hotel bed, but it’s not like I know for sure if that was the vector.
Should it happen to you: It’s okay. You’re not disgusting. It’s just a dumb thing that happens which people blow up far beyond proportion, like herpes. Don’t bother with mattress sacks, as there are too many other places they can live. I’ve never heard much luck from people who tried fumigation, and who wants to literally soak their mattress in poison? Get some diatomaceous earth and spread it liberally around any porous surfaces you spend a lot of time around: couches, bed, etc. (The tiny fossilized shells in DE cut them up as the crawl through it.) Yeah, it’ll be like a playa dust storm hit your house, but it works. You have to leave it out for several weeks, letting it completely disrupt their breeding cycle, but it immediately stops the fuckers from coming out to play. The bites will stop. Most importantly, it lets you get some sleep, which quickly becomes a very scarce commodity. Goddamn little motherfuckers, I’m itchy just thinking about it again.