If i have only been on fluoxetine for 2 weeks and a day or so when will nausea go away?

Assuming the nausea: Is a side effect of the medication, either you can stop the medication and the nausea should be gone within a week, or you can keep taking the medication, possibly lower the dose and take it with food, usually the body will adjust to the medication after 3 or 4 weeks. Feel better! Also, don't be shy about calling your prescribing doctor for advice. That's their job! :)