Folic acid protects your baby against birth defects (specifically spina bifida).
You should take a 400 microgram tablet of folic acid every day while you are trying to conceive.
Eating a balanced diet with plenty of fresh fruit and vegetables is important too.
If you're thinking about getting pregnant, the Measles Mumps Rubella (MMR) vaccine will protect your unborn baby from infection with rubella (German measles), which can lead to serious birth defects and miscarriage.
Talk to your parents about your vaccine history. If you're not sure whether you've had two doses of the MMR vaccine, check with your GP. If you haven't, they can arrange for you to be vaccinated. You should avoid becoming pregnant for one month after having MMR vaccination.
If you're already pregnant and you haven't had two doses of MMR, you should ask about having it after you've given birth, to protect you in any future pregnancies.
MMR vaccine on NHS Choices website
What weight should I be when I am trying to get pregnant?
Getting to the ideal weight before you become pregnant is the healthiest option for you and your baby. A BMI of 20 to 25 is considered healthy.
Being overweight / underweight can affect your chances of conceiving.
Healthy weight calculator on NHS Choices website
Smoking and trying to conceive
It is best not to smoke at all while you are trying to get pregnant.
Help2Quit stop smoking service
Smoking and pregnancy on NHS Choices website
Is there anything I shouldn't eat or drink?
Because you may not know you are pregnant for the first few weeks, it's better to act as if you are already pregnant while you are trying to conceive.
Staying healthy during your pregnancy
Can I exercise?
Exercise is very good for you and helps to maintain good health especially when trying to conceive.
I take pills / medication - is it safe to keep taking them when I'm trying to get pregnant?
When it comes to pills and medication you should assume all are dangerous to your baby until a doctor or pharmacist tells you they are safe.
If you have regular appointments with a doctor or nurse for a medical or physiological condition it is always best to discuss with them that you are planning to become pregnant so that your medication can be changed in advance if necessary.
Diabetes and trying to conceive
It is best if you discuss with your diabetic health care professional that you are planning to become pregnant. They can help you to maintain good glycaemic control whilst you are trying to conceive, which is very important.