What do i do if my 2 year old daughter still has a cough that been going on for more then 3or 4 days and running nose also?

Cough: If she is drinking ok, and only running low grade fever, these symptoms are usually due to a viral illness. Viral upper respiratory illnesses usually resolve within 7-10 days, so you are halfway there. Vitamin c may help her improve 1 day earlier. If she is not able to drink well, or is getting short of breath, please have her see a physician right away.