I would feel that you may consider heavy spotting to be indicative of a menstrual bleed and continue treatment with clomid and stop provera.
Here is an article that you may find useful
http://health.ivillage.com/gyno/gynoperiod/0,,6djd,00.html
Please get back to me if there are any more queries. Do remember to accept the answer if you find it useful. A positive rating and a bonus at your discretion would be appreciated.
Regards
Dr. Gupta

