Mine did when she had her top teeth through :) x
@Hannah do you remember how long it took for her teeth to break through after the runny nose started? I know all babies are different! X
about two weeks but she didn't have the runny nose the whole time just at the beginning of being able to see them in the gums x
It could be a cold, it could be teething. Try using saline solution and the snot suckers to try clear as much as possible