Three days is often a bladder/UTI type dose. Even if your urine didn't have any bacteria in it, doesn't mean there isn't something devloping. Cipro can have some side effects, but most people experience none.
I'd take it. If you're really having anxiety about it, call her back and ask her exactly why she wanted you to. Frankly, she should have told you why she wanted you to in the first place. Makes it a whole lot easier for me when I fill your prescription and have to counsel you on it.
