Is there an expert on Clomid out there?

[Dippy]

I am hoping I can rely on your usual help in answering a few questions on Clomid for me?! My colleague and good friend in work has been ttc for 2 years and is now on her third cycle using Clomid as af was all over the place. She was telling me today that she has been bleeding for most of the month and her af arrived today - 6 days early. Not being an expert, I didn't have a clue what to suggest. Does anyone know if this is 'normal'? I have tried looking for help on other sites but no luck - any advice would be invaluable, the poor girl is at a loss what to try next.