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| Estrogen | Progesterone |
| Estrogen secreted by ovaries prior to ovulation. |
Progesterone is secreted by ovaries after ovulation |
| Its secretion is mainly controlled by Follicle stimulating hormone (FSH) |
Its secretion is mainly controlled by Leutinising hormone (LH) |
| During pregnancy, it induces enlargement of breasts and uterus |
During pregnancy, it maintains the thickness of the uterine endometrium |
| It is produced by growing Grafian follicle |
It is produced by Corpus luteum |
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