I had my first dose of carboplatin last Wednesday. Until yesterday I was tired and constipated, but generally fine. Today I am completely wiped out, having to lie down to recover from minor efforts like chopping onions. Is this normal, and will I regain some energy soon? Need to be on song for the weekend when I have a kidney function test followed by a trip into London for my graduation on Saturday. I'm beginning to think I may have been a bit ambitious!