Kalie, age 18, is prescribed progesterone for the treatment of primary amenorrhea. which adverse effect would need to be reported immediately to the health care provider?

The answer would be: C. Pain in one leg

The pills could cause several side effects like gaining weight or breast tenderness but it was not dangerous. The side effects that need to be reported is a pain in one leg which indicate a deep vein thrombosis.

Lump in the breast also dangerous as it indicates a breast tumor/cancer.