Final answer:
The woman may be deficient in vitamin B6 and B12, which can cause fatigue and shortness of breath.
Step-by-step explanation:
The woman on oral contraceptives may be experiencing fatigue and shortness of breath due to a deficiency in vitamin B6 and B12. Vitamin B6 is involved in energy metabolism, and deficiency can lead to fatigue and weakness. Vitamin B12 is important for red blood cell production, and deficiency can lead to anemia and shortness of breath.