Hopefully you have had regular blood test done and had a basline blood test before you started your first cycle...in a perfect world. You can run your PCT, take some time off, and have your blood levels checked.
When your test are in line you are good to go...everybody recovers at a different rate depending on factors like age, cycle length, 'product' usage, PCT method, your basic genetics, and so forth. Regular blood test are the only real way to know were you stand with your various systems and at what level you have recovered .
If you are not comfortable going through your doctor then check online for one of the blood testing companies that are available, they generally sub out through different testing centers so there is always one close.