Molar pregnancy

I had a phone call from my doctor saying my 12 week misscarige was tested and came back as a molar pregnancy I never did hear of a molar pregnancy until now this is my 2nd misscarige this year my first 1 was a missed misscarige I'm not sure if it was molar as I signed for it not to be tested as I wasent really thinking much at the time. I googled about molar pregnancy and it keeps saying that molar pregnancy are not baby's and there was no fetus but I had a 7 week check up as I have high risk pregnancys and there was a healthy fetus and heart beat I'm really confused has this happend to any one else?