Umair,
Your ferritin is still steadily dropping, which is good news. You are finally getting down into a range where the chelators will start making a serious impact on organ iron load, so keep up the good work.
The platelets are high, but until you see a repeat of this high reading I would not worry. Platelet test is one of the most inaccurate of all tests and relies greatly on the skill of the tech reading the test. Techs not familiar with thalassemia will often count the small red blood cells as platelets, so the reading can be far from reality. Platelet levels also vary greatly from test to test, so I always say wait until you see two high tests in a row before getting concerned. I know a lot of people who have spent a month worrying, only to see the level drop back down with the next test. I highly recommend vitamin E and one property it has is that it is a blood thinner, so keep taking E daily. Your white cell levels are high but that is expected when fighting infections.
There is also a possibility that this is related to malaria. Malaria tends to exhaust platelets, which then tend to aggregate in the blood until removed. This could cause a temporary increase in what is observed in platelet counts. This should level off as your body cleans out the old platelets. Again, make sure you are taking vitamin E daily.