How long should you wait before trying to conceive?

There is no single waiting time that applies to every woman after breast cancer. The right timing depends on the type and stage of cancer, the treatments you received, whether you are taking hormone therapy, your age and fertility, and your personal priorities. In the past, women were often advised to wait two years or more after diagnosis, partly because the risk of early recurrence is highest in the first few years. More recent guidance takes a more individual approach. For many women who have finished chemotherapy and do not need ongoing hormone therapy, pregnancy may be considered once treatment has ended and the body has recovered, often after a gap of several months to allow medicines to clear and blood counts to recover. For women with hormone receptor positive cancer, hormone therapy is usually recommended for years, so timing is more complex. Some may consider a supervised pause after at least eighteen months to two years of treatment, based on evidence from the POSITIVE study. Certain medicines need specific wash-out periods before pregnancy because they can harm a developing baby. Women with higher-risk cancer may be advised to wait longer. Age matters too, since fertility declines with time. The best approach is a joint discussion with your oncologist and a fertility specialist.

Treatment must be complete or paused safely

Pregnancy is not safe during chemotherapy, radiation, most targeted treatment or hormone therapy.

Wash-out periods apply

Some medicines need months to leave the body before conceiving.

Balance risk and fertility

Your team helps weigh recurrence risk against declining fertility.

Planning ahead helps make pregnancy as safe as possible.

Preconception consultation

Meet your oncologist and an obstetrician to review your cancer history, medicines and health.

Heart check

If you had treatments that can affect the heart, an echocardiogram may be advised before pregnancy.

Fertility assessment

A fertility specialist can check egg reserve and discuss options.

Folic acid and health

Start folic acid before conceiving, keep a healthy weight and avoid smoking and alcohol.

Up-to-date breast checks

Ensure follow-up imaging is up to date before pregnancy.

Waiting to try for a baby can be emotionally hard, especially when time feels short.

Talk openly

Share hopes and fears with your partner and care team.

Seek support

Counsellors and support groups for younger women with breast cancer can help.

Plan meaningful goals

Focusing on health, relationships and other goals can make the wait easier.

Decisions about when to try for a baby affect both partners.

Share priorities

Discuss how each of you feels about risk, age, fertility treatment and family size.

Attend appointments together

Hearing the same information helps couples make decisions together.

Respect different views

Partners may feel differently about risk. One may want to try sooner, the other may prefer to wait. Hearing each other out, and asking your oncologist to answer both partners' questions, helps you reach a decision together.

Keep the relationship strong

Make time for closeness and enjoyable activities that are not about pregnancy planning.

Revisit the plan

Circumstances change. Agree to review your timing decision at follow-up visits, as new test results or research may shift the advice.

Keep notes

Write down advice from each appointment so you can refer back when deciding.

Plan practical support

Consider work, finances and family help for pregnancy and early parenthood.