What could it be?

Elizabeth
I usually have a longer than normal cycle 32-45 days & my periods start out really heavy ( like a super-plus tampon lasts an hour) for 4 days then lighten up for the last 3. However this time I had brown spotting for 3 days then very light pinkish-reddish bleeding for 3 days - nothing heavy, no clots- Barely enough for a panty-liner & I had minimal cramps. SO & I were trying over the summer but gave into the "if it happens, it happens" method. So I'm not sure if this is implantation ot just a light period. It started around the same time my people would so please vote and let me know what you think it is. I'm just trying to be realistic and not get caught up in it. Thanks in advance!! 

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