I'd go for it!
I'm off herceptin a long time but my onc told me during chemo it was okay to have a couple of glasses of wine the second week after chemo if I felt like it.
I did'nt go out much during this time so we arranged the second week after my chemo to plan a nice meal with wine at home and it gave me something to look forward to
I should point out I could hardly face eating the rest of the time so really looked forward to this and it was the highlight of my time in chemo for me and my "little reward!!
I don't have statisitics but don't feel it did 'nt do me too harm , all in moderation
