I gave up ttc then this happened

La

I ovulated around july 31st (I get ovu cramps) . Aug 4th I was a little crampy nothing major. Aug 5th I noticed light pink spotting after sex. The next day I was crampy again I only noticed pink spotting once that day No spottingor cramps for a few days. Aug 7th samthing except no cramping. Spotting rangefrom pink to brown back to like a rust color . It'snever in my underwear or toilet just when I wipe . Theres no flow of blood . This has.never happened to me at all. I don'thave any health issues . I took a pregnancytest today and it was negative . I really told myself I was don ttc this month bc I was tired of being let down and this happens and I have no explanationfor it