Mama, I know it's scary seeing baby like that, lalo na fresh pa lang! Please call your pediatrician or go to the nearest hospital ngayon na, vomiting at bloating sa ganyan kaaga can need checking right away, kahit twice pa lang. At 13 days old, baby's still settling in, pero better safe than sorry talaga. One of my mum friends had something similar and the doctor explained it quickly, wala naman, pero kailangan check-up talaga. Don't wait pa, okay?