Your body is a living changing thing, it should be the same, just because it is not does not mean anything is wrong. Make an appt. if you are concerned.
For the most part it is understood that your luteal phase of your menstrual cycle will be the same every month. The part of your period that differs is the time from the start of your period to ovulation.
Yes, it is. Although it is more common for people to have succinct cycles with the luteal phase happening at the same time. You can have different cycles regularly.
your luteal phase should stay regular. However, it is possible to miscalculate when you ovulated, but if your luteal phase is long, test for pregnancy.
Typically the luteal phase lasts between 12 - 16 days after ovulation. The phase itself is usually constant to each woman. However, luteal phase defects are not uncommon. This means the lining of the uterus breaks down before it can sustain a pregnancy (usually under 10 days).
