Hello Thanks for your query. It is safe to take Pause MF. It does not affect conception in any way. You are not having heavy bleeding due to siphene, but because patients with PCOS, have irregular and delayed cycles, but when they do bleed, bleeding is generally heavy as the thickened endometrium is shed off. You need to consult an infertility specialist, as PCOS is associated with irregular ovulation and sometimes no ovulation. If siphene fails to give you positve results, you would need injections such as gonadotropins etc. You also need to be evaluated for diabetes, hypothyroidism, adrenal hormone status, lipid profile levels and vitamin D deficiency. Take care.