Someone help me (I'm scared)

babbby
I'm 19 and well my period is late by two days now. I was supposed to start June 5, I spotted pink on June 2nd & 3rd then the spotting stopped the 4th & 5th and it came back yesterday which was the 6th, but this time it was brown, today I wiped and there was nothing. Has this happened to anyone before? I do have unprotected sex with my husband everyday