S,
It is so hard. I ended up taking a week off but struggled when I got back to work. I was very depressed - the week of going back as well I was caught up in the bombings in London so it compounded EVERYTHING. In the end, I had to get a short course of anti-depressants from the doctor. It helped immensely. In the end, I think it took me a good 3 weeks to a month. There is no right or wrong time though.....work were fantastic and whenever I was feeling low at work they'd just let me do what I needed. They took some work off me too to relieve the pressure.
How's your partner? OH was going through his upset in different ways so we weren't that supportive to each other......it is so hard. As Lucy said though, PM us anytime that you need it. This forum helped me immensely though through that period.
Love & hugs,
Sass
x