Hello from JustAnswer.
If you mean that you are feeling bad because of side effects from the fluoxetine, yes, it be fine to stop taking the drug. Although the fluoxetine is generally very well tolerated, there are some people that develop significant side effects, and if it is making you feel really bad, it is reasonable to stop the drug. It is possible to have symptoms from suddenly stopping antidepressants, but that is primarily a concern when they have been taken for longer periods of time. Since you have only been taking it for 24 days, there is not any significant concern about simply stopping the drug.
If stopping the fluoxeetine, the other consideration is that, whatever condition that was the original reason for starting the fluoxetine may require a different medicine if the fluoxetine is being stopped. If someone gets significant side effects to an antidepressant, it would be reasonable to change to another antidepressant in a different class to try to find one that is better tolerated. But it would require discussion with your doctor to decide on the next antidepressant to try.
If you mean that you are feeling really bad because the condition being treated with the fluoxetine is not getting better, then it would not be as wise to stop the drug. While many people improve at starting doses of the fluoxeetine, there are some people that need a higher dose or need a second drug to augment the effect of the fluoxetine. So, if the underlying condition is the reason that you are feeling really bad, it would be better to discuss with your doctor about adjusting the drug regimen.
If I can provide any additional information, please let me know.