What is this?

Me and my boyfriend have unprotected sex, and use the pull out method. These are the days we’ve had sex this month, no cum got in me that we know of, but I’ve been wondering if anyone has got pregnant from pre cum? I’m not on any birth control. I have extremely sore nipples and I’ve been sleeping lots. This is only coming out of me when I wipe. What could this mean?

*im not sure that I ovulated when it says I did*

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