i'd been taking citalopram for the last 2 years and apart from the first week when i felt very tired, i would say that i had no side-effects. if you're reading stuff online, just beware that they are "possible" side effects. not everyone will get them (and you're unlikely to get them all).
prior to this course i'd taken them before on and off for years (as prescribed by my gp!) and when i was on a reasonable dose i found there were no lasting side effects. tiredness for the first week was the one that really hit me. at my best i was on 10mg and at my worst 60mg.
on 60mg i found after 3 weeks that i got random pins and needles in my arms and hands, and my gp reduced my dose.
i came off citalopram very quickly after christmas as my gp overreacted (according to my consultant at hospital) when we found out that we'd conceived a bit quicker than we thought (by a good 6 months and then some).
the plan had been to wean off the medication then ttc. however, nature had other ideas! so, having been referred to a consultant with an interest in mental health issues during pregnancy, i've since been told that i could go back on citalopram again if my mood deteriorates. apparently there is no problem with being on citalopram when ttc, but a lot of gps get awfully jumpy about it.
look at it this way - if you had diabetes (i'm sure someone has said this to you)then you'd take insulin without question. when it's somethng to do with mental health it seems to be less acceptable. don't try to deal with it on your own.