Has someone had this happen to them ?

Okay so like a week ago I spotted very very light one day .. and then nothing .. now my period was due like three days ago and nothing .. and yesterday I had like brown discharge but only when I wiped and right now I’m bleeding heavy which isn’t normal for me because I always have light / medium flow periods . And i have a urge feeling to go poop but nothing i can’t poop .. is this normal ?