Citalopram making my period late

hey everyone, I've been taking Citalopram for 2 weeks now. 10mg for the first week and then up to 20mg for the second week. I've now noticed my period is 4 days late. I am not pregnant and I have taken multiple tests which have all come back negative. Just wondering if anyone else have had their periods become late since staring the drug.

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My periods have been affected by different medications I have taken in the past. I think anything that is new to your system can have on effect on your menstrual cycle. SSRIs can affect insulin which is a hormone that can alter your periods. I am insulin resistant and as a result I have polycystic ovarian syndrome and my periods have been very irregular over the years.
A word of advice try and avoid alcohol and sugar as much as you can on SSRIs because you can put on a lot of weight very quickly.