First of all, you have to wait for the time of your period. If the bleeding comes, it obviously makes no sense to test, because then this month has been swimming unfortunately, you have to try again in two weeks around ovulation. If the bleeding does not come, it is still good to wait 2-3 days for the hormone HCG to rise to the right level. I have heard rumors that the test was positive on the 7th day after being together, but I do not believe them, as the implantation is at least 8-10 days after the act, and HCG starts to produce from then on. Pregnancy tests do not respond to the hormone HCG, which is released in the urine. So I suggest that everyone try a stronger one (test 10) 15-16 days after the act.