I'm doing the cisplatin every 21 days as well, not really sure why... I'm also doing it right before radiation... Fortunately, I haven't had a "main nausea" event, thankfully, just a week or so of queasiness... which might be as bad...

I'm scheduled for one more round on Aug. 31...

Tongue cancer (SCC), diagnosed Oct. 2003 (T2 N0 M0). Surgery to remove tumor. IMRT Radiation 30x in Dec 2003 - Jan. 2004. Recurrence lymph node - radical neck dissection June 2004. Second round of rad/chemo treatments ended Sept. 2004.