Period Twice & Now Im Late

So i got my period on January the 6. I had sex on the 13 unprotected & then I got my period again on January 21. And now my period tracker is saying that Im late & that I shouldve got my period on February the 5 which i havent. Could I be pregnant? Or should I wait to see if I get my period on February 20? Please help I have no clue if to take a test or wait it out until the 20.