Hello,
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If you had used protection during the intercourse and also the condom did not leak or break then chances of pregnancy are not possible.The symptoms which you have reported as sore throat,cough can be due to viral infection,flu etc.
Regarding the pregnancy it cannot be determined before a missed period.Any test would not give results so early.Do not take stress as it can delay the periods.
Relax as you had used protection so pregnancy does not seem to be there.
Take care!