The IVF specialist I went to see last week had a go at my gyno because she's had me on Chlomid for 10 months and hasnt prescribed metmorfin. This doc says that Chlomid is only effective in the first 6 months and after this time your body becomes immune. She explained it as working on a probability scale ie, your chances of conceiving gradually increase in first 3 months then begin to decrease in the second 3 months - so peak would be at 3 month mark.

She said taking Chlomid for more than 6 months apparently thickens the cervical mucus and can also prevent implantation therefore hindering conception instead of helping. She also said that long term use can increase chances of developing ovarian cancer.

Has anyone ever heard this before???