Is this normal

i have started taking fluoxetine in the last ten days my anxiety has gone thru the roof I’m getting night sweats and losing weight as I don’t have any appetite these symptoms have sent my anxiety skyrocketing is it normal and how long will it be before I start to feel any better.  

Allow five weeks, for your medications to work.

You can discuss your Medication with your GP if needed

BOB

https://beta.nhs.uk/medicines/fluoxetine/

This website highlights some of the effects of fluoxetine; trouble sleeping is one of them. I believe I remember reading that things can get worse before they get better on anti-depressants, but it's a matter of just staying strong and giving the medication time to work. Loss of weight is concerning - I would go back to the GP and just notify so he can monitor it and, or otherwise, change your medication or dosage. 

Give it 5-6 weeks, see how you feel and if you still feel bad, go back and they'll be able to change your medication to citalopram or sertraline.