Need advice on dealing with the death of a family member?

My younger sister who was only 40 passed away last week. It was a very sudden thing with no warning. The initial news was like being punched in the stomach. Then for the past week, we were totally busy with funeral arrangements and friends and family visiting. Now, things have settled down a bit. I had a bit of a breakdown yesterday - just finally let out all the emotion that I had been supressing. I cried for about 3 hours and then slept for about 3 more. I just feel so exhausted and so disconnected. I know grieving is a process and it's going to take time but I've never lost someone so close to me. I'm finding it hard to just get out of bed and get to work or wash dishes or do laundry. Anyone have any advice on dealing with these feelings?