So for a week and a few days I've been fighting off a cold. I was feeling better last week then I was the week before but was still waking up with that groggy feeling and the dry/sore throat. Today I've woken up and I've become a bit blocked again and I coughed a bit, I'm scared it's coming back and that I'm sick because my immune system can't fight off anything anymore because somewhere in my body I'm seriously ill. Has anyone else had a lingering cold or cough?