Describe what happens between days 15-28 if the egg does not gets fertilized

If the egg is fertilized by a man's sperm, the resulting embryo would travel down the fallopian tube and implant in the uterus. This happens around the 20th day of the menstrual cycle. ... Around day 26 of your cycle, the uterus will begin the process to shed its lining causing menstruation to begin

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"a connection, a bond or common feeling between two people", or as a chemical process it stimulates love or sexual attraction

answer; i believe the correct answer is (solid gold);