If i was pregnant would i be having symptoms so soon only two weeks after sex? i took a pregnancy test yesterday it was negative but ive been feeling nauseous?

If your period is delayed, obtain a serum HCG test to be certain about pregnancy. Feeling nausea and lethargy along with congestion with today's pandemic and high positives for OK residents, get a COVID-19 PCR test and quarantine for at least 10 days along with any close contacts regardless of whether the test is positive (false negatives can occur).

While it is possible that you have an early pregnancy, it could also be from something else including gastritis, heartburn or other causes. Have you missed a period? Are you experiencing any other symptoms?