What should I do about the prayers I performed with only ablution (wudu), being ignorant of the necessity of ritual bathing (ghusl), and not distinguishing between prostatic fluid (madhy) and semen (maniyy), both of which appear the same to me?

A woman may choose if she is not certain that what exited from her is semen, and she may assign to it the ruling she wishes. However, if she is certain it is semen, then ghusl (definition) (ritual bath) becomes obligatory. If she is ignorant of what is required of her, then she should investigate and act upon what brings her certainty or a strong presumption of the acquittal of her responsibility.