Ay, nangyari na rin sa amin yan! A few of my mum friends actually experienced the same thing around 2-3 months postpartum, sometimes may sudden spotting or dark blood kahit na parang tapos na yung lochia, lalo na kung may activity or mas maraming movement lang kami. Since mix feed ka at pumapump, sometimes ang hormones ay nagsisimula nang mag-adjust which can cause light bleeding or spotting bago bumalik ang period mo. But honestly, I'd rather have you check with your OB about this one, especially since it's been a bit unpredictable at gusto mong sure na okay lang ang healing ng tahi mo, kasi may times na may minor bleeding from there pa lang or hormonal imbalance. Better safe than sorry, especially postpartum!