First time with a sick toddler.

My daughter is 20 months old and for the first time since she was an infant, IS SICK! I feel so bad for her. She has a runny nose and my grandmother who takes care of her said she was feeling a bit hot through out the day. I have no idea if I should be giving her any infant medicine or something. I put some baby vapor rub on her chest as she slept and have been using a nose sucker to clear up her nose a bit which isn’t working so well. I also put a pillow under the pillow she’s laying her head on so she can breath a little better. She usually sleeps naked, with a diaper on only but I put her clothes on tonight and some socks. What else should I do to make this sickness go away faster and smoother for her?