Absolutely correct FD
The answer to the issue about the blood count depends on the cause. A low white count or low platelets is like saying 'the engine is misfiring'. What we need to know is WHY. So you would need to get all the results from your haematologist and a proper report as to cause and prognosis.
If the problem was just due to a drug you then stopped, probably no problem. If you have a low grade leukaemia I suspect you may have more of a challenge. There are literally dozens of causes, but your haematologist is your first port of call. If no cause has been found, then that means other causes will have been eliminated by the tests you have had or may have had so a full copy of your notes will assist the CAA to get you flying - yes they do want to help!
Good luck