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Cancer and planning a pregnancy

Cancer and cancer treatment can affect fertility, pregnancy and when to try for a baby. The most important time to discuss this is before treatment starts. During and shortly after treatment, contraception, pregnancy safety and cooperation between your oncologist, GP, fertility specialist and, if needed, a gynaecologist or urologist are important.

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  • Fertility should be discussed early in cancer care, rather than as an afterthought after treatment.
  • Treatment can affect eggs, sperm, hormones, the womb, ovaries or testicles.
  • The level of risk depends on age, the type of cancer, treatment type, dose intensity and what was already known about fertility.
  • Becoming pregnant during treatment is often unsafe, so reliable contraception may temporarily be particularly important.
  • Decisions about having children usually require cooperation between your oncologist, fertility specialist, GP and, if needed, a gynaecologist or urologist.

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Further reading

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Vaginal bleedingVaginal bleeding outside a normal period, after sex, during pregnancy or after the menopause needs assessment. Many causes are not serious, but some need prompt treatment.
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Trying to get pregnantBefore conception, you can start folic acid, have medicines and vaccinations checked and optimise chronic conditions. Regular sex without contraception around the fertile period gives a chance of pregnancy. Earlier investigations are needed with older age, irregular cycles or known fertility risks.
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Diabetes and pregnancyDiabetes before or during pregnancy requires extra support to monitor glucose (blood sugar), blood pressure, kidneys, eyes and the baby's growth. Ideally, start a shared plan before conception. Never stop or change medicines or insulin yourself.