You don't take a month off then jump back on gear... We'd all love to do that but you can permanently harm yourself in so many different ways.. Rule of thumb - You take the time off that you were on cycle plus PCT. (Time on steroids + PCT = Time off) It sounds to me like you didnt run an AI during your cycle which would cause bloat if you dont use one.. It sounds like you didn't run PCT which would help you recover your balls.. HCG is a nice touch but not needed unless its a complex cycle or you seriously messed up some where down the line.. I'd take a guess and say the 600mg of test E has your estro elevated because you did not use an AI which will suppress your natural testosterone more than it already would be from the steroids alone and now that you've come off your sitting there with high estro low test.
My recommendation would be to run a pct of
Nolva 20/20/10/10 OR 40/40/20/20
Clomid 100/100/50/50 Split the dose into every 12 hours
Aromasin 12.5/12.5/6.25/6.25 ED
That will get your balls going and possibly stop the formation of gyno if it hasnt already started.. Take time off, train your butt off and research.. Even the gurus are researching every day, you can never have enough knowledge

PCT should get your balls back.. for future ref if you prone to shrinkage you can run 250iu's of hcg twice a week as maintenance and your balls shouldn't shrink during cycles -You would start it around week 6 or 7 of your test E cycle.. Then stop HCG usage and begin PCT when the steroids and HCG are out of your system. HCG blasts at the end of a cycle are usually only needed if you got BAD shutdown.

I saw your cycle HCG isn't really necessary on a light cycle. See if you respond well enough to nolva and clomid first. If you have difficulty recovering your levels or do a heavy cycle then look into it. But, IMO u'll be fine on clomid and nolva.