We've had a runny nose for a whole year now, and today is the third da…

We've had a runny nose for a whole year now, and today is the third day that it's blocked up. The mucus doesn't run out, just a blocked nose when I clean it there's mucus. There are also rashes on the neck and under the neck. But it's more likely a rash or something not quite right, she ate something. So the question is: if the child has a cold, just a stuffy nose, do we need to give them a vaccination? Should we have given it at three or four months old? Do you think it's safe to give it?