Throwing up after eating too much

My cheat day is soon but today was my sisters birthday and I had a small slice of paleo cake and went over my calories. I know I underate a little yesterday but I feel disappointed with myself. I'm not bulimic or anorexic or anything, I lift weights and am healthy, my body fat is 18%. Does anybody healthy here induce vomiting after overeating? 
Update: no I am not bulimic, I've never done it before. I'm just trying to maintain my weight and I know this will screw up my goals. My stomach feels fine there is no discomfort
It's a once a month cheat day 😭 

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