Not sure what all of your symptoms are but, here is a list that might help you to decide...
sadness, inactivity, difficulty with thinking and concentration, a significant increase or decrease in appetite and time spent sleeping, feelings of dejection and hopelessness, and sometimes suicidal thoughts or an attempt to commit suicide, a reduction in functional activity, amount, quality, or force
There is an on line Questionare at a website that you can take which may help you figure out if you're depressed.. http://www.dr-robert.com/amidepressed.html
Go down the page almost to the end and you will see the word Questionare, as a link. Follow it and take the test, answering carefully and as close as you can get to they way you have been feeling.
Hope this helps you find out. And if you are, there are lots of good therapists out there. I found one and she really helped me by giving me some mental tools to use on a daily basis.
Good luck.. !
We get through this one day at a time.. :)