Thyroid TSH is too high-64. 6. Me a lot.

I am Rahul Kumar Singh, done TSH test recently and it is 64.6, causing worry to me and need your help. TSH test and medication details: Sep 2016 TSH -- 6.5 no medicines( first test , general physician advised to wait for couple of months and visit a doctor if increases) Dec 2016 TSH -- 8.5 started eltroxin 50 mcg Feb 2017 TSH -- 0.047 started eltroxin 25 mcg May 2017 TSH -- 64.6 started takinng 50 mcg again in panic Please help me what should I do and is there any specific reason this has shoot up to such extent. Only diet that has changed recently is I am eating too many Mangoes these days and taking sprouts regularly , please let me know if that is not advisable. Your response will help me a lot.