I commented above and meant a 3 month wait not 3 week wait.
Well honey, you are definitely too young to be going through all of this over and over again. While it is possible you are pregnant, if you are not, please take better precautions to protect yourself not only from pregnancy but from diseases. When you are older, you will look back and realize how careless and reckless you were, and you will regret it. Live your life, because when you have a baby, you don't get to anymore. Your baby becomes the most important thing. Enjoy being a kid!
it's a possibility wait another week to week and half to take another test
After a mc it can take your body a while to recover. Especially when you mc at 14 wks. Yes, there is a chance you could be pg again but I would just wait a few days and test again. It isn't uncommon to have a late period, usually they recommend a 3 week wait before trying to get pg again so your body can heal.