Hanh, 42, 35 weeks pregnant, initially attributed her shortness of breath and left chest pain to pregnancy symptoms, but doctors diagnosed pleurisy.

My, 37, 9 weeks pregnant, had to undergo an oophorectomy due to necrotic torsion, but the baby was fortunately saved.

Ms. Hong, 21, experienced chest pain for a month, attributing it to pregnancy, but doctors discovered a superinfected abscess and drained nearly 150 ml of pus.