Thank you for sharing your question with the EmpowHER community.
Primolut is a female hormone treatment used to treat menstrual disorders and menopausal symptoms. Changes in bleeding pattern including irregular bleeding, scanty bleeding and the absence of bleeding may occur as a side effect. Other common side effects are bloating, headache and nausea.
Make sure you are communicating your symptoms and results with the medical professional who prescribed sooner rather than later.
I hope this helps.