I recently got diagnosed with chlamydia and I was treated. The doctor told me to read the packet and take it home. She told me that it was to be taken as a single dose, which to my understanding is all at once. Then on the packet it said it needs to be taken as a single DAILY dose. This is the 250 mg azithromycin. I'm really concerned and confused! Did I not take it correctly? I took it once a day. Is it still as effective?