Baby is sick I need some opinions

Sandra
My 5 month old has been stuffed up for about 2 weeks, she has a cough too. The dr said its a virus but I feel like no matter what I do it's not getting better.  She's had no fevers. I was thinking about taking her to the hospital to get a second opinion. What do u guys think? I've been using a humidifier and putting baby Vicks on her chest.