citalopram

i started taking citalopram for my anxiety last month, took it for 2 weeks, then stopped to test a theory. i missed this months period. i assume its from taking a new drug but now im all out of wack lol. i assume today is my peak day based on CM and af has been around the same time for the past few months so i can guess when to expect her again. my question, has anyone taken citalopram and messed up their period?? question part 2, has it caused issues to get pregnant?