Pireriod may 22 and came on 16 and before 16 I had sex like 2or3 weeks before that

Is your period late? I don't understand your question.

Your period was DUE on May 22 but instead you got it on May 16? If you had your period on May 16 and had sex 2 or 3 weeks before that and not after that the odds that you are pregnant now are very slim.

Is that what you are asking?