Delayed menstrual cycles have been reported when taking Ciprofloxacin. The delay can also be caused by the urinary tract infection. Both can cause delayed menstrual cycles.
No, months have no effect on your menstrual cycles.
No
No.
Usually mine just doesn't come if I take ecstacy right before my period is due.
because it just does.
Having a thyroid condition can affect a woman's menstrual cycle. The thyroid autoimmune conditions Graves' disease and Hashitmoto's thyroiditis can also affect one's menstrual cycle. For those with Hashimoto's and hypothyroidism, the result can be heavy and/or irregular menstrual cycles. For those with hyerpthyroidism and Graves' disease there can be a change in one's menstrual pattern.
When you menstruate is determined by your menstrual cycle, a hormonal domino affect between your brain and reproductive organs. The idea that womens menstrual cycle synchronize is a myth, one womans menstrual cycle cannot change another womans menstrual cycles.
B12 vitamins don't really have any effect on the menstrual cycle - although all round good nutrition does help regulate hormones, so in turn helps regulate menstrual cycles. B12 in particular can help ease menstrual cramps.
Menstrual cycles will come to an end as women go through menopause. Women's menstrual cycles will also be stopped if they fall pregnant, while on hormonal birth control, or after a hysterectomy.
Once a month
No. Humans are the only mammals with menstrual cycles. Deer, as well as other mammals, have estrous cycles. http://en.wikipedia.org/wiki/Estrous_cycle