The endometrium stays thick and ready for a fertilised egg.
Stage 1
Stage 2
Stage 3
Stage 4
A ovum (egg) is released from one of the ovaries. AKA ovulation.
The endometrium builds up and forms a thick layer full blood cells, ready to receive a fertilised egg.
Lining of the uterus (endometrium) breaks down and passes out of the vagina for about 4-7 days.
