With a properly used condom and no leakage, pregnancy is very unlikely. Stress from testing can itself delay a period by a week or more, and sleep loss, weight change, or illness also shift cycles.
Next Steps
If it is more than 7 days late, take a home
pregnancy test with first morning urine. A negative test at that stage is reliable.
Health Tips
Please do not take "period-inducing" tablets without a prescription.