To know if you are pregnant before traveling, you can take a urine pregnancy test. However, it is most accurate to wait until after a missed period. You can also get a blood test, which can provide results earlier, but it requires a doctor's prescription and interpretation. Keep in mind that there is a risk of false negatives with both types of tests. Regarding the Zika virus, some regions like the Dominican Republic are considered at risk, especially for pregnant women. It is important to take precautions and use protection during sexual activity to prevent transmission of the virus. Ultimately, it is up to you to assess the risks and make an informed decision about your travel plans.