O.K. I have taken Deca alone before. Now I know that you are supposed to stack it with test. Anyways! I have not been able to shoot out as much sperm lately. This cycle was at least 7months ago. Every once an while it seems that everything is back to normal, and then boom! It seems like it is not producing enough. The cycle I did 7months ago, I didn't do the PCT. Still 7months, you would think everything would be normal by now. Right now I'm fixing to do another cylcle, but I don't want to start until my body is ready. Oh yeah! Every once and a while I get a little symptom of blue balls. I don't understand what is going on if someone could help me, I'd really would appreciate it.