Stuffed up nose, crying, can't breathe!

I don't suppose anyone has any advice on how to cry without getting a blocked nose? I absolutely hate having a blocked nose and having to breathe through my mouth but it happens any time I cry so I end up getting upset about not being able to breathe as well as whatever made me cry! It's horrible!

My cat probably has cancer. I want and need to be able to cry about it, but I want to just shed tears, not snot! I might try sudafed?