Do I need to increase the dose?

hi all,
any thoughts/help/experiences here would be appreciated.
i have taken citalopram 10mg now for 6-7 weeks, and after about 4 weeks they started to work, all was well again, untill last moday when between my wife being ill & kids waking up it was an awfull nights sleep the next night was just as bad & from then till now my sleep is pretty rubbish & i feel anxious again.
can poor sleep cause a blip in their effect? (hard really to do much about it with a 2 & 4 year old whose days start at 6)
is this likely to settle down again?
can the affects of 10mg wear off (i believe its a low dose)
if i increase the dose will i go through the same side effects as when starting? (i suffered with increased anx & loss of appetite)

regards to all.

No effects citalopram 10mg wont wear ff as a pharmasist told me. The only thing s that does make it wear off is cofee n tea

thanks for post,
been back to docs today & i'm trying 20mg, see if that puts me back on an even keel.

Hi Rob, Ive Also Been On 10 Mg And Have Found If Ive Had A Bad Night Im More Anxious Not Enough Rest Makes Your Nerves Bad.hope You Get On With New Dose Ok. Sue

thanks suzy sue
first one this morn, got myself worked up about taking it then the old 'what if' it doesnt work routine, see how we go though.