Aw mare, ganyan talaga ang body pagkatapos ng D&C, sometimes it takes a few months para mag-settle ang cycle, lalo na kung may bleeding pa ulit after, kaya hindi nakakagulat ang late period mo ngayon. Pero 13 days late with negative PT is worth checking with your OB talaga, especially para ma-rule out kung may iba pang nangyari, pwede ring delayed lang ovulation or hormonal imbalance from the procedure, hindi lang pregnancy. A few of us moms went through similar and most of the time normal lang after, but better safe than sorry na makipag-consult para ma-confirm at ma-ease your mind. Hang in there, alam ko stressful ang waiting game na yan.