###Human: Can miscarriage happen after seeing heartbeat of fetus in earlier scans? ###Assistant: Hello. If you have seen scan and fetus, it would be there. Heartbeat if clearly seen then it would be more then five weeks actually. Anything could be possible as it was early pregnancy. If severe cramps and fetus had a tendency for miscarriage (like a fetus with congenital abnormalities aborts easily in very early pregnancy) could have had a miscarriage. It is possible that with cramps she had experienced was the product of conception coming out but it would be with spotting before along with cramps. With abortion medications also, she could abort and two doses with an interval of eight hours could give results. But in both the cases her mental, emotional, and physical condition are the main guidance for the event actually. If she has diabetes with high sugar levels, positive thrombophilia screen, thyroid abnormalities, and/or antithyroid drugs and few other medical issues with or without treatment continuation could lead to miscarriage naturally as well. You can check serum beta hCG (blood pregnancy test level) to check and confirm the first scan you saw if you want. Beta hCG will give you a positive pregnancy test and if you follow or repeat it, it should show a gradual decrease in case of miscarriage.