Is this a concern?

My daughter (5months old) got a cold maybe 3 weeks ago, runny nose and a cough. (No fever) it lasted less than a week, I used a Vick’s humidifier and it helped her, just kept nursing her as much as possible to help...

Now, for the last 2 days the cough came back.. it sounds like a wet cough, she’s not having a coughing fit, doesn’t struggle to catch her breath and no wheezing. ShE does maybe 3-4 coughs at a time about 4 times a day.. is this something I should be concerned about?