Should I test

On April 27 my love and i had a little too much fun, and then on may 5 i had a painful cramp but thought nothing of it and again on the 6th. Yesterday may 7th i went to use the bathroom and when i went to wipe i saw it was a bit pinkish brown, later in the day a placed a pad just in case, the pad ended up not have blood at all. However when i wipe i still get a pinkish color, my period isn't due till about may 22.... should i test or wait.