Anxiety or Genuine Illness during Chemo

I started chemo on Monday, had a blood transfusion on Tuesday and it's now 4am on Wednesday morning and I've woken up sweating and bright pink in the cheeks. 
I don't have a thermometer at the moment, as most places have sold out and the one I ordered online is taking forever with everything going on. 

I've waited an hour and don't feel like the heat in my face is going down although the rest of me feels fine. 

My mum doesn't think I have a temperature (woke her up), that I'm just anxious and now I don't know whether to phone the helpline number they gave me or not. 
 

has anyone else experienced this?