Menstrual period: start of the cycle
Your cycle lasts about 28 days:
- Some women have a shorter cycle and others a longer one.
- The cycle lasts between 25 and 35 days.
- Some women have an irregular cycle. Every month, their cycle differs in length.
- The length of a woman’s cycle can change during her lifetime. During puberty, the cycle is often more irregular.
Fertilization of an egg cell
- One sperm cell enters the egg cell and fertilizes it, and;
- The fertilized egg cell achieves a successful implantation in the mucous membrane of the uterus. It will start growing.
You do not have menstrual periods during your pregnancy. However, some women may lose some blood in the first months of pregnancy.
You can get pregnant on about 6 days a month: the egg cell stays alive for 1 day, the sperm cell up to 5 days. You are fertile about 5 days before ovulation and the day after ovulation took place. In the following days, up to the days before your next ovulation, you are not fertile.
Menstrual period: not pregnant
If the egg is not fertilized, the uterus will expel the egg and the mucous membrane. You have your menstrual period: blood leaves your body through your vagina. The menstrual period lasts 3 to 7 days. A new cycle starts at that moment.