Oh, my sympathies. I was 8 and 9 days over with my two. It's miserable isn't it?
There is nothing I can say at this point that will make you feel better. Every day just feels so hard.
If you feel you need to talk to your midwife about your depression, they will listen. Or anyone else you can talk to?
In the meantime, coping tactics. Try and think of some treat you can have every day - something to look forward to the next day. Doesn't need to be big. A swim. A favourite magazine. A massive bar of chocolate. Just that little thing that's good about tomorrow can be a help whilst you are waiting. If you like swimming I found that particuarly good with no 1 as it takes away a lot of the pressure and weight. I didn't even really swim, just sort of wallowed about in the shallow end and did a length every now and then.
If you can afford it, some reflexology or a massage can be really recharging. Or if you have a partner, just a nice foot rub with some lotion.
A nice nap in a sunny spot to make up for the sleep you aren't getting at night.
Also, if you want some pro-active tips, you could try some of the exercises on spinning babies to help him/her into a good position.
Good luck. It will be over soon, even though every hour feels like a century at this point.