Still not back to work and Sleeping problems

Hi, My name is Deb and I am 50 years old. I was diagnosed in May with a large tumor in my left kidney. On Thursday 8th July I had the kidney removed laparoscopically. It all went well and I was home by Sunday. At the point of diagnosis, I was told that I could be back to work within 2 to 4 weeks if it was taken by keyhole surgery. I am still not back to work and it is almost 6 weeks later....I suppose it is different for everyone and I am not a very patient patient!!  But I am also having trouble with sleeping....for the first 4 weeks I slept on my reclining sofa. Then I tried to sleep in my bed propped up with lots of pillows! I woke at approximately 2 am in agony with back and hip pain. So I resigned back to the sofa. I tried to sleep in my bed again tonight, this time, both on my back and on my side with a pillow lodged firmly under my tummy for support, and once again by 2.30 am I was in agony and had to come back downstairs on the sofa  Has anyone else had this issue? If so how long did this last? And do you have any advice for me? I am due to go to Blackpool at the beginning of September and I'm worried about having to sleep in a bed.....Many thanks