Hi mama! Light spotting after Duphaston is pretty common actually, a few of us tried it din and experienced the same thing, kaya don't worry too much. But since this is about your cycle and medication, best to message your OB just to confirm it's normal for you specifically, especially since you're FTM and bawat body talaga ay different, your doctor will have the best answer based on your situation. Fingers crossed it's nothing, pero peace of mind is important din no?