Weird or not

Ok here we go... I had unprotected sex 12/21/18 which was my fertile window. My period was due to start on 1/8/19. So I started watching to see what my body was going to do after Christmas which is my date of ovulation. By 1/5/19 I started bleeding brownish blood and then by 1/8/19 I took a test but it was negative. The bleeding lasted about 5 days, but on 1/18/19 I started bleeding again after I just got into a heated argument with my brother(which is weird) im not due to start again until the beginning of February. The bleeding didn't last long, but I do have some brown discharge til this very day. On top of all of this I have been sick with flu like symptoms. Im not taking anything but medicine for this flu. Can anybody explain this to me.

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