I got it 3 weeks ago (for the second time). IME the anti virals are help stop the rash developing, so reduce risk of scarring. I felt quite ill for the first week - very very tired, and no appetite - so be prepared to take things easy if you can.
Try to keep as cool as possible, I've had a fan blowing onto my face all night every night (mine is on my head and eye), because the pain is worse if you get hot.
I just spoke to my doctor about it this morning because the pain has been keeping me awake - he's given me amitriptyline which works for neuropathic pain so worth asking for that it pain gets too much (although I've only had one dose so can't say whether its any good) also he said to alternate paracetamol and ibuprofen so you stay topped up with pain killers (obviously without exceeding the daily dose for either - but it does mean you don't have to wait four hours for pain relief all the time).
damp cold flannel held on the area gives a bit of relief, or something frozen - ice pack or similar, wrapped in a tea towel and held on the area.
Some people put calamine lotion on the rash - didn't do much for me, but might work for you.
Also - its made me feel a bit down, partly because of the pain but also I think the illness does that to you. Massive sympathies from me - its a bloody horrible thing to get 