Prozac is really not helping me like I thought it would

I have been taking prozac for two days (well the generic one) for major Depression and bulimia. My doctor has told me that it takes four weeks to work and I am aware of that. The reason why I have been taking it is because according to my psychiatrist I suffer from olfactory hallucinations (I swear that I smell bad and that everyone is talking about it) and hearing all of these negative things about me from other people made me so depressed i would binge eat and purge the food with laxatives.

Since started taking it on Tuesday I sleep even less, get nauseous and have the worst case of diarrhea. I started taking it in the evening and I tried to switch to the morning but it seems as if I still get diarrhea for a few hours. I have cut down on my binge eating and expelling but I can still see and hear people telling me how horrible I smell. I take like three to five showers a day, tried a million holistic alternative and regular medical prescriptions but I still feel as if I smell terrible.

Now on Prozac I feel as if I have cotton in my ears and I am stuck even more in my own heads but instead of hearing multiple thoughts i just hear my own single thought. Just something telling me to go on a great binge even though I am not hungry. Or even worse. Its hard for me to react to certain things now and when I hear people talking about me I just feel worse eventually and want to binge. I dont know what to do.

I dont think its working, its just numbing me down to outside responses