Feeling symptoms after 7 days already on prozac

I've been taking 20mg of fluoxetine-prozac for a week now, havent felt any effects uptill now..7 days later? I feel nauseous and very tried, is it possible that I'm only feeling the side effects 7 days in? 

Hello, I've been taking Prozac, just going into my third week, first 2 weeks weren't too bad and now the third week I'm waking up feeling sick, pretty sure the start up effects are in the first few weeks, so I would say yours is perfectly normal and should subside slowly. Stay positive and try to ride it out for the end benefits

Yeah thanks! It  just seemed like a lot of people developed side effects immediately-which makes sense- I thought I was one of the lucky few not feeling any side effects..uptill now that is. Ahah yes, trying to stay postive.. nothing is permenant i guess, mind over matter smile

Hi, Nikita. What you are experiencing is very typical when starting on Prozac and also when going up in dosage.