If you ate it a lot, consider this factor, the hormone may affect you in a positive way if you have issue with your period.
http://nativesunjax.wordpress.com/2009/06/11/fishy-business-hormones-used-to-cause-sex-change-in-tilapia/
http://nativesunjax.wordpress.com/2009/06/11/fishy-business-hormones-used-to-cause-sex-change-in-tilapia/