I started taking Metformin because I have PCOS and I'm trying to conceive. This month my cycle has been longer than usual and I have heavy bleeding. Is this normal? How long does it take for this medication to take effect?

It is normal to experience changes in your menstrual cycle when starting a new medication like Metformin. It may take some time for the medication to have its full effect, usually around 4 to 6 months. Make sure to follow the instructions for taking Letrozole at the correct time to maximize its effectiveness. If you continue to experience heavy bleeding, it is important to consult a healthcare professional to assess the situation further.