Not sure if I have a true ED

TW...Hi, I'm louise, I'm 37yrs old and have never had any problems with my eating before, up untill 3 months ago when I had a sudden reoccurring passed trauma come to light and I stopped eating for 17days... when I finally started eating again a developed a unhealthy eating pattern, ide count all my calories in my food ' weigh everything out, I wont eat more than 0 / 500 cals a day and I fast days at a time.. I will take diet pills and laxatives 4 times a week and I'm on the scales up to 3/4 times a day... when I wake I think about food and when I sleep I think about food, I just want to be thin so desperately its drinking me to I'll health. Is this just a faze or have I anorexia or is it to soon to predict... I don't know what to do... I occasionally binge then end up self harming or taking an overdose.. please help me understand.