Hi, it seems as if your WBC has gone back down to where it should be, after some infection in the past months. You are more at normal levels now. With your blood film also being normal, I wouldn't worry about cancer.
Having "macrocytosis without anemia" isn't very common, I don't think. You can maybe suspect medications or alcohol, or else vitamin deficiencies of B12 or folate for your large red blood cells.
Having large platelets with normal number of platelets? I don't know a cause for that... unless you have bleeding and so have to be constantly making new platelets. Newly made platelets begin larger and then get smaller over time. Or maybe your past infection caused the high MPV.
Do you ever get food stuck when swallowing?
Are any abnormalities concerning? If your MCV and MPV are still high in 1-2 months or so, then you should probably want to know why. But I doubt that it is serious.
If your ESR of 22 is at or very close to the upper limit of normal, then no doctor would probably worry about it. But it should go down eventually. You don't want to have what is called 'chronic inflammation'.