You can get pregnant any day of your cycle. You don't know for certain when you will ovulate and sperm can live for days in the uterus after sex.
You bleed at the beginning, not the end of your cycle. Day one of the menstrual cycle is the first day of your period.
The menstrual cycle is the reproductive cycle, so it's during your menstrual cycle that you would conceive - I think that you mean how long after menstruation can a child be conceived. This all depends on your cycle, ovulation typically occurs on day 14 but that's not the case for everyone - also remember that just because you conceive (egg fertilized by sperm) doesn't mean that you're gong to get pregnant or that the pregnancy will end in a child.
The menstrual cycle continues up until pregnancy when the menstrual cycle is stopped so that you no longer ovulate while pregnant and the uterine lining isn't shed. The menstrual cycles also come to an end at the end of your reproductive years going into menopause.
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.
There usually occurs an ovulation on day 14 of the menstrual cycle. Usually one, occasionally more than one ovum is released from the ovary. It is trapped by the fimbriated end of the fallopian tube. Usually fertilization occurs in the fallopian tube.
Woman can always get pregnant unless if she or her partner is sterile. It's during the beginning of the cycle and end of the cycle that the chances of becoming pregnant skyrocket.
Everything has a beginning and an end & Menopause is the end of the menstrual cycle of fertility
The menstrual cycle begins Day 1 of your period, about half way through the cycle you ovulate and the last day is the day before your next period starts. Day 1 begins the cycle all over again. The last day of your cycle tells you the length of your cycle, on average between 24 and 34 days, although longer and shorter cycles are still "normal".
The monthly cycle of changes in the ovaries and the lining of the uterus (endometrium), starting with the preparation of an egg for fertilization. When the follicle of the prepared egg in the ovary breaks, it is released for fertilization and ovulation occurs. Unless pregnancy occurs, the cycle ends with the shedding of part of the endometrium, which is menstruation. Although it is actually the end of the physical cycle, the first day of menstrual bleeding is designated as "day 1" of the menstrual cycle in medical parlance.
what
The menstrual cycle is the natural changes of the uterus and ovaries in the part of making sexual reproduction possible. The average length of each cycle is 28 days, divided into 2 parts (ovarian cycle and uterine cycle), each with 3 phases. The beginning of menstrual flow, or period, marks the end of one menstrual cycle and start of a new one.
Finding out your sister is pregnant has absolutely no relationship what so ever with your menstrual cycle, your menstrual cycle is determined by hormonal changes in your body and not hormonal changes in someone elses body. You spot towards the end of your period as it's the last of the uterine lining shedding, most women experience spotting at the end of their periods.