Consider being in regular follow-up with your gynecologist. Get repeat test done in 1-2 weeks time along with ultrasound scan to look
for the cause. Few liver diseases, use of medications that could resemble the hormone molecule, use of infertility drugs, liver disease, liver cancers, choriocarcinoma, germ cell tumors, IgA deficiencies, gestational trophoblastic disease or neoplasm, presence of heterophile antibodies, can also cause rise in HCG levels.