Great news! I had the same chemo drugs but not benadryl. I took a little ativan prn if the decadron made me too restless.
I felt a little spacey or loopy for a day or so after..but nothing that was problematic. I ended up taking pepcid throughout chemo. I also found myself unable to drink coffee, but had tea instead. After you get through this cycle, you will be able to predict pretty well how it will go for the rest of the time. I could have set my watch by things....5:00 on Friday started acid reflux, Thursday morning my voice faded (never could explain that one)...etc.
Also, beware of constipation. The pre-meds can be tough on the body. I used, with advice of my RN, a stool softener a few times during the chemo week, and I ate dried apricots to help. Nothing here is too gross to ask, we have been where you are, and are happy to help...