Hi @IlonaC,
When is your chemo? I know exactly how you feel - I got sniffles and twinge of sore throat before my second chemo and was all worried about messing up my schedule. I just kept reminding myself to take this one step at a time and accept that at some point I might have a session shifted!
Thankfully it faded away so was probably hayfever - I suspect the gargling (with salt or bicarbonate) that we’re told to do with chemo might help throats too.
Additionally I read online about people being able to still do their chemo with a cold. But that’s up to the medical professionals who are attending to you, so yes best to check in with them.
Big hugs and hoping it clears up soon.