Hello, Since you have conceived naturally, it is very good. As progesterone deficiency in the form of corpus luteal defect is expected in PCOD, supplements are usually given in the form of suppositories or orally until the placental function is active. Ondansetron is usually not advised in very early pregnancy; you may try Doxinate, a combination of Doxylamine succinate and pyridoxine hydrochloride instead. Please take adequate rest, avoid stressful activity and have proper diet. Take care.