Hello,
It is not uncommon to get side effects like
sexual dysfunction, menstrual imbalance, weight gain(which in turn leads to menstrual irregularities), lethargy and nausea when taking
Citalopram.
Most anti-depressants increases serum
prolactin levels, the hormone released after childbirth which helps with nursing and briefly pauses menstrual cycle due
hormonal suppression from high prolactin.
I would recommend consulting your treating doctor regarding dose or drug change if problems worsen.
The chances of urine HCG negative
pregnancy still can not be dismissed in a women of reproductive age group without proper investigations.
I suggest you see your GP and ask for blood beta-HCG levels and serum prolactin levels. These tests will not only help rule out pregnancy, but also help explain missed periods and breast tenderness.
Hope I have answered your query. Let me know if I can assist you further.
Take care
Regards,
Dr. Ayesha Shareef