I am absolutely no expert,but I do suffer from depression and I feel alot of the things that you describe.I would definitly see a doctor.Medication as in anti depressants really do help me.I also see someone on a regular basis to talk things through.Without doing these things aswell as the wonderful support I get here,I would just not beable to function.

So please do go and see someone,I know its difficult when you feel so bad,but you can only gain from going.

Keep posting, I will look out for you.

Please take care