http://www.medications.com/effect/view/36555 OMG I am so glad I found this side. I have just started taking Yasmin. Previously I was on Mercilon and found that I got very nauseous a few days before my period was due (this happened a week ago on Friday) so I asked the doctor to change my pill and h Thu, 20 Nov 2008 16:56:57 -0500 http://www.medications.com/effect/view/36555?item=14697 Yasmin caused me to have so many stomach problems that I ended up having to go to a gastroenterologist and was diagnosed with IBS. Since going off of it, I haven't had any problems and would have to blame birth control for all of those side effects. http://www.medications.com/effect/view/36555?item=14697