getting pregnant with menstrual cup

So my fiancé and I are a lesbian couple and are trying to conceive and we used a friend as a donor and used the cup two days in a row when my app said was the good days to do so. Does anyone know exactly how this works or may we have to try next month too with the iui at home instead? The cup was very fitting and we did what we found on line but was just wondering if anyone knew anything about this?