Hi C.,
Riley is so right. I was pregnant and then had a miscarriage, a few weeks later i was feeling like i could be pregnant again, i think mostly cause i wanted to be, i too took a test and it came up positive. Unfortunatly it was only showing positive because of left over HCG levels in my body. However i will say right after being pregnant you are the most fertile. So it is very possible.
I know it's hard to go back to the doctors and get your hopes up, but its the only way you'll know for sure. You want to know now if you are so you can be taking the best care of yourself possible. I am so sorry for your loss and understand your fear. I lost two babies before having my family. It's horrible, painful, scary, and every other awful thing you can think of, but that doesnt mean the next time will be too. Have faith things will work out. Go see your doctor and just prepare yourself for everything. Try not to get excited yet, but because there is a chance you are you need to go find out. Good luck and please let us know what happens. Im saying some prayer for you tonight.