Should I...?

Today my period is supposed to start. I woke up and wiped and there was some pink blood so I thought cool, I started now instead of at work. I had terrible cramps up until about a minute ago when my Advil kicked in. Like the kind of cramps that you usually only get when you've got like flooding going on. I've been to the bathroom a couple times since I woke up and I've only gotten light brown/pink when I wipe, nothing else and nothing heavier. 

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