Its been 4 days since ive eaten anything.. could this lead to an eating disorder?

Me and my boyfriend broke up a week ago and the first day i picked at my food and the second day i ate a little bit but i just cant seem to get hungry.. and whenever my stomach growls i go to the fridge and everything in there makes me want to throw up. my friends brought me some ice cream and stuff because they thought it would get me over him but i cant eat it.. i ate a gummy worm and threw it up.. and i didnt throw it up on purpose! im just not hungry.. ive been getting dizzy but like i said when i eat i throw it up and idk why.. any body got any advice?