Is anyone else???

Is there anyone out there who knows anything about an anger issue? I can go from 0 to bitch is less than 5, seconds and I honestly don't understand why my SO out up with me anymore. I hate living with myself. I'm thinking about going to talk to a doctor about maybe bi polar, or some sort of anger issue. I need to get this in check before I ruin my entire life. Insight as to what doctor and maybe questions that they might ask, would be nice. Thanks for reading.