<Tr> <Th> Specialty </Th> <Td> Obstetrics and gynecology </Td> </Tr> <Tr> <Th> Symptoms </Th> <Td> Vaginal bleeding with or without pain </Td> </Tr> <Tr> <Th> Complications </Th> <Td> Sadness, anxiety, guilt </Td> </Tr> <Tr> <Th> Usual onset </Th> <Td> Before 20 weeks of pregnancy </Td> </Tr>

At what stage of pregnancy can miscarriage occur