Waiting is excruciating

I feel like the hospital have really messed my husband about. It's getting in for 6 months since he first saw his GP and they found fluid on his lungs he's waited 6 weeks for biopsy results only to be told it's inconclusive it could be medethelioma but it might not be !! They really seem to be dragging their feet sending him for different scans district nurses draining his chest 3 times a week, he looks thin and visibly ill but the communication has been terrible I'm so annoyed but don't know where to turn