Anak, please go to your doctor or clinic as soon as possible, 2 weeks post-delivery with severe abdominal pain and no appetite is something they need to check right away, lalo na kung nag-breastfeed ka pa. It could be maraming possibilities, pero hindi dapat i-guess lang yan. One of my mum friends had something similar and kailangan talaga ng check-up agad. Huwag maghintay pa, okay? Your recovery and your milk supply depend on you eating well and feeling okay.