It may be "Hand and foot syndrome" Palmar Plantar Erthrpydysesthersea. It can happen with chemo, and did to me from the same infuction chemo...Cisplatin, Taxotere and 5-FU. Look this up, in addition to seeing your doctor, and you will find lots of info, and things to do.
I lost all my fingernails, and toenails too, but they t grew back after several months. Toenails took longer. I still have problems with them easily tearing, breaking, uneven growth.