I can't stop

A few days ago I just took a shit ton of ice cream into my room and ate it in private. since then ive basically been on a three day binge where I can't stop eating. My stomach physically hurts and I hate how I look and im so stressed out but I just can't stop binging. every night I tell myself that this has to stop and that something has to change but it hasn't and Im getting scared. did I mention that I'm terrified of weight gain and that's making this 96432 times more stressful? I can't let this be a normal thing I feel so sick. someone please help, I'll take any advice.