Creamy white discharge for over a week?

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like so much that it's there every time I take my pants down to go to the bathroom (sorry if tmi) I've had it like this before but only occasionally and not for so long. 
I didn't think I was pregnant because I had some brown bleeding and spotting like 6 days after sex like a week before my actual period was due and it seemed too heavy to be implantation. However now with the white discharge, plus I've been eating and peeing a lot, I'm starting to be concerned I could be. Has this been a symptom for anyone else?