breastfeeding crisis!!

I am seriously struggling to do this.. My baby is 9 days old and he is latching & sucking good. During the day he will eat and sleep for 1-2 hours at a time but at night it's different story! He is up literally ALL night long every 30-45 minutes eating.. Aside from my baby wanting to eat non-stop during the night I am having other issues as well.. I have no appetite! I have to make myself eat and it's usually only one time a day that I can do it.. Just the thought of food makes me feel sick.. I worry that it's effecting my milk for baby! He is losing weight & I feel like a bad mom!