What does it look like if you have an early miscarriage and just pass it naturally?

Well it depends on how far along you are, but if it's under say, 10 weeks or so then it will just be really heavy bleeding and maybe a few blood clots. My doctor told me if you go through a pad in less than an hour, go to the doctor because you're bleeding too much. Also, depending on far you are, it can be seriously painful. Most of the time at this young of an age, you will not be able to tell the baby from a blood clot. Oh, and make sure to go to the doctor when you think it's all done to make sure all of it came out, because if not, then it can lead to serious problems. Hope this helps :)