question: Hi.. i m 23 years old ,primigravida...(7 weeks).i have a query about bleeding , few days before i had a small bleeding, soon i went to hospital, they took inj.susten,mean time taken an ultra sound , but there is no abnormality found in that . so i just want to know about the cause of that bleeding, and the indications of using inj.susten as well?it ll reoccur /not ? please do the need full