Can somEone get pregnant after a miscarriage?
Yes most people do. Miscarriage is quite common, about 1/3 pregnancies end in miscarriage. If you have problems afterwards it could be something linked to the reason you had the miscarriage in the first place and then you would need to be evaluated by a doctor.
If I had a miscarriage and my pregnancy symptoms disappeared but now they are back could I still be pregnant?
It's not risky, it just depends on what caused the miscarriage, what was performed for the miscarriage and how far a long you were when you had the miscarriage. I am four months pregnant after two miscarriages and everything is going great. Check out this article for advice on trying to conceive after a miscarriage: http://www.associatedcontent.com/article/752151/resources_and_ideas_for_those_trying.html
Having a miscarriage means that you lost a fetus. Since a women can have a miscarriage and become pregnant again, which many have done the literal answer would be yes. I don't know if the term miscarriage is medically correct if you lost one fetus in a multiple birth pregnancy, but that would also be another way you could still be pregnant