Threatened miscarriage. What to do? Transvaginal ultrasound may bleeding pero may heart beat si baby

So to make the story detailed. I had my first checkup this day since may nakita akong light pink spotting yesterday and today bago ako pumasok sa clinic nagkaron ako ng red na spotting na. So as you can see ito yung result nung transvaginal ultrasound ko. May bleeding pero may heart beat na si baby. Niresetahan ako ng duphaston as well as yung isa pa, and yung folic acid. How many days ba ang tinatagal ng pagdudugo if ever nagstart na ako uminom ng gamot today.