Unusual Behaviours, Possibly a Respiratory Infection?

[minyoongi]

So I got a new hamster for 1 week and I've noticed it recently has been making these strange wheezing and clicking noises. My hamster has also been hiding a lot and I've tried leaving her alone to settle in. Now I haven't heard her going on her wheel or playing. She has been hiding a lot and made new nests. I feel so scared and I feel have been researching about this but most posts say they are either happy, having a respiratory infection or just scared. I'm jot really sure what others mean by "hunched" position but my hamster's posture is straight. My hamster used to take treats from my hand but now she is actually mortified of me. What do I do? Should O go to a vet? Please give me advice!!

[minyoongi]

Sorry for the spelling errors, I've been rushing this