Stop my flow symptoms and conditions

My dermatologist put me on Yaz a little less than 2 weeks ago for acne. I've been bleeding ever since! I'm really getting worried about it and have been debating calling my gyn to see what the deal is. Has anyone else bled like crazy with Yaz? How long did it take to stop? My flow is probably medium and bright red...with no signs of stopping at the moment. I also have had a horrible headache for about 3 days, can't sleep, have lower back pain, and feel extremely nauseated. This pill is horrible!