My advice, time for a life change. Exercise is good at helping depression, start going on on walks, runs, bike rides etc. Get her out and about, seeing new things.
We are as active as we reasonably can be with a small child

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Thanks.
The drug thing is something I find worrying, I'm not too sure she is keen on that either but doctors orders and all.
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Cheers for the post.
I think it's more something that has came about. She has a pretty busy job, she chooses to teach piano in her spare time and then we have an 18 month old which adds to it all.
It doesn't help that I have a more stressful job and I work away quite a bit so I think this exacerbates things. We do things as a partnership but its hard when im not present at all.
Another problem is we are both stubborn buggers
arguments which, in retrospect, may have been being brought on by what she is going through are made worse with both of us refusing to be wrong in an argument and then needling at each other. Obviously this is something I'm trying to curtail now but I find it difficult without really concentrating on it as its not in my nature to backdown, especially if its through someone else being unreasonable 
Thanks again all.
