While observing fast in Ramadan, I realized that I didn`t become free of menses because I quickly made Ghusl (Ritual bath) before making sure that it has ended. As a result, I estimated the number of these days as I thought most probable and made up for them on the basis that I have my menses in Ramadan for one time, but I don`t remember if I had experienced it twice or not in that same month?