Weight loss

I really need help losing weight. I was shocked when i saw my weight. 3 years ago I had lose more then 50 in just 2/3 months now I I have gain double. I weight 203/205 and I'm only  18😔 I know I'm obesed. I always been overweight but I'm really tired.. I feel so bad abt my body image.  And then I feel like I'm stress with my body and college work 😫😫 I really need help