i was on celexa for the first year-year and ahalf of medication. the side effects i experienced were a lack of concentration, uber forgetfulness and lots of yawning. they did pass though, as i recall after about the first week.
before i switched medication i found i was having a very low sex drive which is not normal for me and tends to be a side effect of anti-depressants, however it could have also been the relationship i was in so i can't say for sure whether it was the meds doing that or not.
keep pushing on! i remember being sooo happy about a month after i started taking them because i finally felt more like my usual self.