Hey bro, sorry to hear that you have had a rough go with the last few months. Some guys recover well, while others naturally have a harder time. Deca can be real rough on recovery. Once you get yourself in order, you might want to stay away from 19-Nor based drugs, deca and tren. Over time, you will probably regain more natural test, but after 4 months, post PCT, I would think you would be higher than this. I am going to suggest that you do another PCT, ASAP!!! Here is how I would run it.
HCG at 500iu 2x wk
.5mg adex 2x wk
See how this works. Once you go on HCG, you will probably start to feel better pretty quickly. Hopefully you will be able to keep that ball rolling. It might still take time after your PCT. I would get some labs down a few wks after this new PCT and see where you test out. Hang in there bro. This is going to take some work, but you can probably expect a good recovery. Either way, Please write back and let me know how this goes.