Complex sentence: Now in her late thirties, she finally decides to have a child of her own but her plans are dampened when she discovers she has a minuscule chance of becoming pregnant due to her uterus is T-shaped.
Split into simpler sentences: Now in her late thirties, she has finally decided to have a child of her own. Her plans change when she discovers she has a minuscule chance of becoming pregnant because she finds out her uterus is T-shaped.