Mama, I really think you need to see your OB soon about this, irregular bleeding after giving birth, especially with tummy pain, is something a doctor should check out properly, hindi lang guessing game. It could be hormonal, pero post-delivery ang body mo is still settling down, at may marami pang possibilities na kailangan i-rule out. A few of us moms had weird cycles after delivery too, pero iba-iba ang cause, kaya talaga need ng proper checkup. Don't wait na mag-worsen, mama, better to know what's going on sooner rather than later para makabawi ka na fully. Sending you strength!