The best thing for you to do would be to make a doctors appointment or make an appointment with a counselor. I found that a mixture of therapy and medication is very helpful.
Websites that can provide you with information about depression and suicide prevention
http://www.upliftprogram.com/depression_stats.html
http://allaboutdepression.com/gen_01.html
http://www.dbsalliance.org/site/PageServer?pagename=about_statistics_depression
http://www.nimh.nih.gov/health/publications/suicide-in-the-us-statistics-and-prevention.shtml
http://www.depression-guide.com/depression-statistics.htm
http://www.healthyplace.com/communities/depression/related/getting_help.asp
http://www.depression-help-for-you.com/
http://www.recovery-inc.org/index.html
1-800-784-2443 (
1-800-273-TALK (National Suicide prevention lifeline)
1-800-621-4000 (World wide suicide hotline)
1-800-442-4673 (National Youth Crisis hotline)