lost weight

I am still in trim 1 and i lost 2-3 kg. Hasnt been able to eat at all and only survive on dry crackers and a bit of milo. Sometimes even will puke out milo. And now due to the phobia of vomiting, i dun dare to eat even tho hungry and also no appetite. Can only eat dried and plain cracker. Feel so weak everyday. Add-on: i just ate and then within 15mins i puke all out again.