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 <a href="https://glowing.com/glow-fertility-program">iui</a> 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?