28 Days
4
3 to 5 days
It takes about 30 days on average
28 days
This heat cycle lasts for several days up to three or four weeks.
The average is 28 days but it varies with each girl.
The average menstrual cycle lasts 28 days, from the start of menstruation to the start of the next menstruation. The "bleeding phase" typically lasts 5-7 days.
how do you stop your menstrual for one or two days?
If you had concieved then implantation occurs around 14 days after conception, around the time you'd have been due to menstruate. How many days into your menstrual cycle that is depends on your menstrual cycle.
A typical menstrual cycle lasts between three and five days, however the time period between two and seven days is typical as well. If a woman experiences a menstrual cycle lasting more than seven days, then she should seek medical attention.
It's not a menstrual "circle" - it's a menstrual cycle. And on another note, you can calculate the menstrual days by marking it down on your calander; from the first day you started.