Nandrolone metabolites can stay in your system for a very long time. Being that they can be detected for up to a couple months or even more, it onyl makes sense that it makes recovery a lot harder. I would say that given the fact that you have completed 5 weeks of post cycle therapy (pct), you should notice your balls start to get back to normal over time. How long? Everyone is different. A month to a couple months until they are back to normal I would say.