I have used over the counter Benedryl every night since I stopped drinking, 19 days now :P, does that count?
I wouldn't think so, unless you're getting a buzz off it.
I have had trouble with step 3, so haven't got on to step 4.
What kind of trouble are you having with step 3 Digderidoo? It was explained to me, and I believe, that a big part of step 3 was to trust the steps, commit to working the rest of them, and get busy doing it. Try not to stay where you're at, stepwise, too much longer.