I took positioned 2 after my partner spewed his juice on me and I was worried that it might have gotten inside. After 3 days of taking it, I started to spot. At first it was red then a few days after it became brown. Now sometimes it's brown sometimes it's red. I have been spotting now for 7 days. And my period starts in 2 days. What should I do? Should I be worried or will it pass?