We could catch a cold.
Trip to San Francisco was very tight schedule and after that we shifted from tense to relaxed, we might be careless ourself?
Today I tried American medicine which was recommended by Po.<---Very very sweet! Cherry taste!
It was for kids but good for us, probably Japanese people does not tolerance to an American medicine which is stronger than Japanese one.
Anyway my sore throat has gone but new headache is coming now.....