Those that lose gains---- how long does it take?

[biteme]

I've been on prohormones(They work despite what some think) and the real thing for 2 years now. I have been completely clean for 5 weeks now. I have lost 2 pounds, my strength is decreasing most of all. Acne on back and shoulders is starting to clear. I'm down to 20 reps with 225 on bench, instead of 27. I know it's an individual thing, but should I expect to lose much more after 5 weeks? I can do 17 reps with 225 normally when I'm clean and lean. That hasn't been the case for over 2 years.