Cisplatin and capecitabine for stage 4 rectal cancer with liver metastasis

I have just started my 2nd line treatment on Cisplatin & capecitabine,  already had 6 cycles of Carboplatin & Paclitaxel which worked really well for my main Rectal tumour which is just scar tissue now. . However the liver tumour not so well. With almost no side effects other than hair loss and a bit of neuropathy. 

Just wondering how anyone has found the side effects on Capecitabine, I am only into my 2nd week of them but struggling with my appetite and really bad fatigue.

I was meant to be on the Cisplatin  day 1 then 14 days cape  then 1 week rest but for some reason with no explanation my prescription was done for 21 days,  waiting to speak to Consultant on Monday to ask why the change, anyone else had a change made to their schedule? It's my first cycle so nothing to do with my blood results, just a bit confused!!