Possible to experience pregnancy symptoms 5 days after sex?

Pregnancy: You didn't say when in your cycle you had sex. The test may be positive as early as 8-10 days after ovulation. It would be unusual to have symptoms before that time. You can use a urine pregnant test to confirm this after the 8-10 days. Most of the tests are reliable now especially if done around the time you should get your menstrual cycle.