I have a very weak, one day menstrual flow. What could be wrong?
The amount of bleeding will vary from person to person and cycle to cycle. As long as your cycles are regular, that is the important part. Certainly if the endometrium is not developing adequately, that could impair your fertility. I would not worry about this at this point in time. Just wait and see what happens when you begin trying for pregnancy. If you have difficulty, then testing and evaluation will be done to see if the endometrium is not developing adequately. If that is the case, then supplemental hormone can be given.