IF i starve myself???????????????????

i've been trying to eat way less since last sunday and heres what i do. I usually do not eat anything before noon, then around 2 i'll eat a small snack like some crackers or an apple. I drink lots of water and have one small meal a day i've lost like 5 lbs since sunday it prolly was mostly water weight and i'm getting really frusterated but i've sort of lost my apetite all together so i'm not gonna give up and pig out.