Weakness, legs pain and head ache.

Hi doctor, I met covid primary contact on 18th April, I had my first covaxin vaccination on 14th April. After meeting him in 10 mins i had runny nose and head ache it continued and then after 7 days i got some 0.1 percent of throat pain which comes and goes twice or thrice in a day for few seconds.(25th April) from last 5 days(29April) I am feeling very tired.. so i had got rapid test and tested negative. The primary contact himself is negative and didnt show any symptoms. I previously had migrine and sinusitis that too from many years. i m daily having head aches.. i had a CT before a year for the same and also vitamin test.. which stated vitamin defeciency. I am having severe fatigue from past 5 days and no other symptoms. I didnt have any fever or cough..and now i dont have runny nose or sore thorat too.. Can u please help me why this weakness is becayse of. Its already been 19 days since i met primary contact who had no symptoms. Please suggest. Attaching CBP for reference