Gestation Calculator

This calculator has been designed to give you an idea of the treatment options available to you*. If you decide to have an abortion with Marie Stopes UK, one of our nurses will give a more approximate gestation date during your appointment by way of a scan.
*Please note that this online calculator will only give you an estimated gestation based on the details you have provided.

Please select the first day of your last menstrual period.



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Hepatitis B

Hepatitis is a term which means inflammation of the liver. There are several hepatitis viruses which cause this, namely A, B, C, D, E and G.

How do I get Hepatitis B?

The Hep B virus is mainly spread through direct contact with infected blood and blood products. It can also be transmitted by having unprotected vaginal, oral or anal sex with an infected person.

How do I know if I have hepatitis B?

Almost half of adults and children who get Hepatitis B have no symptoms at all. Some people feel well for several months before experiencing any symptoms. The symptoms include: fever, tiredness, nausea (feeling sick) and vomiting, reduced appetite, joint pains, jaundice (eyes and/or skin turning yellow).

Your doctor at Marie Stopes can do a blood test to show whether or not you have been infected with Hepatitis B in the past, and whether or not you have a chronic infection.

How do I get treated for hepatitis B?

If you are exposed to hepatitis B, seeing a doctor immediately allows you to get a treatment which can prevent infection. There are some medicines to help long-term carriers of hepatitis B.

What would happen if I did not get treated for hepatitis B?

Some people with hepatitis B will have no long-term problems. About 1/3 of people with chronic hepatitis B will go on to develop a disease of the liver which can be serious. 15-25% of people with untreated chronic hepatitis B will die of liver disease.

How can I prevent myself from getting hepatitis B?

There is a safe and effective vaccine for hepatitis B which can protect you from getting hepatitis B. For adults, there are 3 injections over 6 months.

Reduce your risk of getting hepatitis B

  • Don’t share needles/syringes or any drug injecting material.
  • Practice ‘safe sex’ using condoms and dams.
  • Before getting body art (tattoos and piercings), make sure the body artist uses only sterilised equipment and new inks and needles each time.
  • Don’t share personal hygiene items like toothbrushes, razors and dental floss.
  • Cover any bleeding cuts and grazes immediately.
  • Blood spills, including dried blood spills, can present a risk to others. You must clean these with gloves and disinfectants.
  • Have regular STI checks at a centre like Marie Stopes United Kingdom. 
  • Discuss STIs with your partner, even when it is difficult to talk about. Your partner will appreciate your honesty and that you don’t want to infect him/her. You have the right to know if they are infected too.