He Alex. It's nice to see another new member on that's my age. I'll be 17 Jan. 26th. I think talking with you're Doctor would be a good idea. It's good that you are comfortable enough to talk about things like that that with them. Like SkyBdark said make sure you tell your doctor that you don't think it is normal teen feelings. I'm glad my parents figured that out for me before I did something drastic.
I know how hard it is to make you're girlfriend understand it's not her fault. It took me weeks to convince my boyfriend he had nothing to do with my mood swings. He was just around me all the time so he was there for my ups and downs.
I hope you've found this site to be helpful. If you ever need to talk about teenage stuff my email is ickydog2006@yahoo.com. Sometimes I don't check it for a day or two. But if you start emailing me I'll try to check it more often.