I had a medical abortion at 9 weeks that has failed! i want to know the risks if i continued the pregnancy, not happy to abort now at nearly 14 weeks?

Few, if any risks: The risks to this pregnancy are no different then any conceived pregnancy without the failed abortion attempt. These include genetic malformations or accidents of pregnancy itself. Most abortion MD's see a patient on follow up and when the pills fail perform a surgical abortion. It is not too late at 14 weeks to return to the MD and complete the procedure.