I just had the same thing. My grandmother would always make me hot water with lots of fresh squeezed lime and a little sugar. That definitely helps with a sore throat. Use a netti pot for a stuffed nose. Lots of homemade chicken nooodle soup. And if you're too miserable, doctor said tylenol cold and sinus or tylenol cold and flu is safe. Along with ricola cough drops.
Using a netti pot helped me sooo much! Also rubbed mentholatum on my feet & put big comfy socks on before bed.
Saline spray for the sinuses or a neti pot is good.
For sore throat and cough I make my own cough syrup with honey, ginger, olive oil, lemon juice and cinnamon (that part is for taste) and a bit of apple cider vinegar. You can find recipes online.
It helps a LOT and you can take it as often as you need.