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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How does a vasectomy work?

How does a vasectomy work?

The Vasectomy Procedure

Vasectomy is a simple surgical procedure where a surgeon seals the sperm-carrying tubes (called vas deferens) to prevent sperm entering the fluid a man ejaculates.

After a vasectomy, the testicles will continue to produce sperm as normal, but the sperm cannot enter the tubes and is simply absorbed into the body. You will still form an ejaculate after a vasectomy, but it will not contain sperm. It is very effective and the possibility of failure is 1%. We will test the ejaculate 16 weeks after the procedure to ensure there is no sperm present and we can test the semen every year to make sure that no sperm has returned if needed.

Vasectomy Methods

There are two methods of vasectomy: cautery (no-scalpel) and cut & tie. Marie Stopes UK provides the no-scalpel (cautery) method only as it offers faster recovery and still has the same efficacy as cut & tie.

A no-scalpel/cautery vasectomy is performed as follows:

  • A fast acting local anaesthetic is given before the procedure, which numbs the area.
  • A small incision is then made in the scrotum to locate and heat seal the vas deferens (sperm carrying tubes). The incision is very small and no scalpel or stitches are needed, except in very rare cases.
  • The small incision is then protected via a dressing to keep on for 48 hours and the procedure is complete.