I've been having unprotected sex all September long and my period started two days earlier than expected but only lasted 2 days and I usually have heavy flow but this time it was normal and then on the 4th day i had spotting that was brown when wiped .? Was that implantation bleeding or a period ?? Also my appetite has increased so much I'm also fatigue I've took a pregnancy test two times and it came out negative . Is it too early to take one??