He won't kiss me...

I have been sick for about 2 weeks now. Just a cold. My husband kissed me and even had sex with me the entire time I was sick. Now I am no longer sick and he refuses to kiss me on the lips. He says he doesn't want to get sick and feels like he is getting sick. I am no longer sick at all. I'm so confused. He had no problem with it while I was actually sick and now he doesn't want to touch me? It really hurts my feelings. This is the first time he has ever done something like this. He has kissed me every single times I've been sick.