Confused .. Help me

Af was not due till Monday. Sat afternoon went to the RR and wiped and saw a lil bit of pink stain . Happened twice on Saturday . Then on Sunday it was a little bit more but not enough to wear a tampon . Then by Sunday evening I had nothing no more?? What is going on?? The only thing I felt was on Saturday I was hot all day long . Even with the AC blowing on high and on Sunday night I felt like I was getting a fever. . Anybody have any clue?? Could I possibly be pregnant ??