Well actually, no it cant. Unless you have some other medical problem you will not lose your vision because of your menstrual period.
No, when you start your period is determined by your menstrual cycle - cinnamon does not and cannot effect your menstrual cycle. Your period comes when it is due.
No, humping a pillow doesn't effect your period. Your period is controlled by your menstrual cycles, masturbation has no effect on this what-so-ever.
No, months have no effect on your menstrual cycles.
Spermicide will not affect your period at all. Menstruation is controlled by your menstrual cycle, spermicide will not effect this at all.
No, your period comes when it is due in accordance to your menstrual cycle - tea does not effect this what-so-ever. Your period will come when it is due.
Amenorrhea is basically the absence of the menstrual period. You will not have a period at all and you might also have hair loss, headaches, vision changes, excess facial hair, and acne.
No, sex cannot push back your period - think about this for a moment, if sex could effect your menstrual cycle how would anyone ever get pregnant? Your period is determined by your menstrual cycle, sex doesn't effect this unless you happen to get pregnant.
There are absolutely NO 'side effects' or negative effects from taking a shower during the menstrual cycle (or a period).
No, antibiotics do not effect menstruation - although if you are ill it can cause delayed menstruation or menstrual problems.
Yes, being sick can affect your menstrual cycle by making your period late. Stress, whether good or bad, can have the same effect.
Yes, this is normal. Intercourse doesn't effect menstruation at all so it has no relation to your period, when your period starts is dependent on your menstrual cycle - sex doesn't effect this.
No, taking laxatives will not stop your period. Your period is determined by your menstrual cycle, taking laxitives has no effect on your cycle at all.