Complications
OHSS may be complicated with ovarian torsion, ovarian rupture, thrombophlebitis and renal insufficiency. Symptoms generally resolve in 1 to 2 weeks, but will be more severe and persist longer if pregnancy occurs. This is due to human chorionic gonadotropin (hCG) from the pregnancy acting on the corpus luteum in the ovaries in sustaining the pregnancy before the placenta has fully developed. Typically, even in severe OHSS with a developing pregnancy, the duration does not exceed the first trimester.
Read more about this topic: Ovarian Hyperstimulation Syndrome