I had unprotected sex just over 2 weeks ago. Had light cramps and sore breasts with darkening areola which has never happened. Got light period. Preg?

Hard to guess. A urine pregnancy test, done correctly, gives a reliable result 3 weeks after sex (3 weeks after when conception might have occurred), or 1 week after missing a period. If done sooner, a positive result is likely real, but a negative result may be due to testing too soon, and thus lead to a repeat test. If a woman gets her normal regular period, then she is not pregnant, and a test is not needed.