Brief Answer:
Explained below

Detailed Answer:
Hello and welcome to "Ask A Doctor"

I have gone through your query and can certainly understand your concern,

Let me assure you that, you cannot become pregnant unless and until there was an actual penetration or even at the very least an ejaculation inside or sometimes rarely over your genitals.
This delay in getting periods could be due to some hormonal changes. Do not be worried as stress can alter the hormonal levels too.

Please be patient and wait till it happens naturally.

I hope this helps,

Please feel free to discuss further.,

Regards

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