Best time to test for pregnancy is when your late for your period.but since you had another period then i would say your not pregnant.when your pregnant you dont get periods they stop.
yes i got twice test before i get my period it was nigetive ,but still i have pregnancy symptoms. and this time when i i got my period i had very bad back pain and hard cramping which i never experiace since my first period. i dont know why is this.
Have you taken a test ? if you had a normal period then likely hood is your not pregnant,your period may have been late due to late ovulation.just because you had unprotected sex it dont mean your pregnant,there is 25 - 30% chance each month of a women becoming pregnant.but if your having symptoms then take a test.