A.M.
It may be that you had what is known as chemcical pregnancy - an egg fertilizes and implants but then doesn't get any further. they are very common. most of us don't notice when we have one because we aren't paying such close attention. The positive is that they are nature's way of ensuring that an egg that wasn't right usually chromosomally abnormal doesn't develop. They aren't anything to be worried about as they are really common. Now that so much research has been done on IVF etc. docs now know that over half of embryos created are not chromosomally normal - perhaps as much as 75% of embryos even in young people and nature deals with this by either not fertilizing, not implanting, or not growing. Good Luck next time.