It will be 4 weeks Friday that my niece had gastric sleeve in Tijuana Mexico. We watched the video and the surgery went well.. She has not been able to keep anything down. Throwing up black nasty stuff and poop is black as well...Been to the ER twice and they ran , all kinds of test on her, find nothing... She is weak and dizzy and not getting better. The doctor in Mexico keep saying your body has to adapt...I get that but not able to even keep water down...Anyone else experiencing these symptoms?