About 75% of women and 50% or less of men who have chlamydia show no symptoms. I wont go so far as to say it is "normal" but it has happened. Go to the cdc.gove website and type in Chlamydia. Read the information provided.
I meant to say you can have Chlamydia that long and have no symptoms? Is it normal for it to go unnoticed for just at a year?
It is very possible to go just over a year with no symptoms of std.