hey girls.

So my period came right on time a few days ago. I usually use pads, but I had to use super size tampons cause i was at this conference for the whole day. My period was really weird because usully my flow is super heavy on the second day, but it was light this time, and on third day i thought it was gone, but i bled really bright red in the evening. On the 4th day it was over, but i had a dark brown discharge. can it be because of stress? i was really tired and stressed this week. Im worried if it has anything to do with early pregnancy