01 · Pathway
For pregnancy to happen
Ovulation · fertilisation · travel · implantation
Any break in these steps can sit behind infertility. The timeline is a teaching map, not a personal diagnosis.
| Step | What must happen |
|---|---|
| 1 · Ovulation | A mature egg is released from the ovary. |
| 2 · FertilisationDay 0 | Sperm travel far enough into the fallopian tube to fertilise the egg. |
| 3 · TravelDays 1–4 | The fertilised egg travels through the fallopian tube toward the uterus. |
| 4 · ImplantationDays 6–12 | Pregnancy begins when the fertilised egg implants in the womb. |