Long layered hair symptoms and conditions

I've been taking Yasmin since March of 2006... My periods have always been light and short in duration (3 days). In the past few months my periods have been 6-7 days with severe cramping... In addition, my hair started shedding excessively about 2 months ago and I've probably lost at least 1/3 to 1/2 of my scalp hair! My doctor tested me for thyroid problems, but determined that the hair loss was telogen effluvium (caused from stress). I have also been having issues with my stomach being upset and have lost nearly 15 lbs since I first started taking Yasmin. If anyone else has ever experienced hair loss from Yasmin, please let me know. I've read articles that have stated you can lose hair when stopping Yasmin, but I'm wondering if taking it could be causing my hair loss???