HELP! 5 days of light brown discharge starting 8-11dpo?

Amanda • 31 Years Old - TTC for going on 2 Years - 1 👼🏻 - Wishin` and Hopin`
Started with pale brown discharge around 8-10dpo (unsure of when I ovulated) out of OPK and can't get reliable temps bc of work schedule.  Had shooting pains in both sides of uterus at different times. Negative wondfo.  What's happening to me? :(

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