What is the menstrual cycle?
The menstrual cycle is what your body goes through to get ready for pregnancy. This menstrual cycle is the time from the first day of your period (first day of bleeding) up to the day before the start of your next period.
Ovulation usually happens during the second half of the menstrual cycle. This is when an egg is released from one of your ovaries. To get pregnant, the egg needs to be fertilized by the sperm.
Ovulation doesn’t happen every month for every woman. There are some conditions that may interfere with ovulation, such as endometriosis and polycystic ovarian syndrome (PCOS). If you are not getting a monthly period and are trying to get pregnant, speak to your doctor.
How long is the cycle?
Women’s menstrual cycles can vary in length and from month to month, but the average is around 28 days. It’s normal to have regular menstrual cycles that are longer or shorter than this (from 21 to 41 days).
It doesn’t matter how long your menstrual cycle is, most women will ovulate around 10 to 16 days before the start of their next menstrual cycle.
Can I get pregnant at any time during my menstrual cycle?
Yes, but it’s unlikely you’ll get pregnant just before or just after your period. You are most fertile when you ovulate, so this is when you’re most likely to get pregnant. Understanding your menstrual cycle and knowing more about what is happening month during the month, can help you learn the best days to get pregnant.
What if my menstrual cycle is irregular?
It can be more difficult to get pregnant if you have irregular periods because you may not ovulate regularly.
There are many possible causes of irregular periods, which may affect your fertility. For example:
- extreme weight loss or gain
- stress or exercising too much
- medical conditions such as thyroid problems or polycystic ovary syndrome.
Having irregular periods does not mean you won’t get pregnant and there are things you can do to boost your chances of success.
I’ve been using contraception. Will this affect my menstrual cycle?
This depends on what type of contraception you’ve been using. If you’ve been taking the pill, your period may be irregular when you first come off it, so try to give yourself up to 3 months for your natural menstrual cycle to get back to its ‘normal routine’.
The first period after stopping the pill is known as a ‘withdrawal bleed’. The next one after this is your first natural period.
The contraceptive injection can also affect your menstrual cycle. Your periods may change and become irregular, heavier, shorter, lighter or stop altogether. This can carry on for some months after you stop the injections.
If you use the contraceptive implant your fertility will return to normal as soon as it is taken out.
How soon can I get pregnant after coming off the pill?
You can get pregnant as soon as you come off the pill but if you’re trying to get pregnant, it’s a good idea to wait until you’ve had a natural period. This will give your body time to adjust and give you a chance to make sure you’re ready for pregnancy.
My menstrual cycle is still irregular. Has the pill affected my fertility
It’s unlikely the pill has caused any fertility problems, but it can sometimes cover up problems you already have, such as missing periods or PCOS .This is because the pill prevents the ovaries from releasing an egg (ovulation), so although it’s normal to experience period-type bleeding on the pill, you don’t have a ‘real’ period.
Can I use my menstrual cycle to predict my due date?
Yes. You can work out how far along your pregnancy is (and therefore when the baby is due) by counting from the first day of your last period.
This can be confusing because you probably didn’t get pregnant until around 2 weeks later, after you ovulated. Even if do you know the date you got pregnant, this is counted as day 14 of your pregnancy (if your cycle is 28 days), not day 1.
Your pregnancy is calculated from your last menstrual period because every time you have a period this is the body’s way of getting ready for pregnancy. It also gives healthcare professionals a standard to follow because it’s very difficult to know exactly when the sperm fertilized the egg.
I’m pregnant but have some bleeding. Is this my period?
Implantation bleeding sometimes happens pregnant women around the time theto period would have been due. Implantation is when the developing embryo plants itself in the wall of your womb. An implantation bleed is very light bleeding (spotting) that is usually pinkish and sometimes brown. Not everyone will have an implantation bleed.
It’s common to have light bleeding or ‘spotting’ without pain before 12 weeks. This isn’t often serious, but you should contact your doctor, midwife or Early Pregnancy Unit immediately to be checked, just in case.