TW: binge eating. Weight gain after weight loss, help!

So I’ve lost almost 50lbs in the past year and I have been working so hard for it.. I finally had the body I wanted, I was so happy in my skin but then suddenly 3 weeks ago I had my first binge.. my grandma came to visit and she used to have her own bakery, so her sweets are amazing. i ate an entire cake, and then I just couldn’t stop eating.. I moved on to bread and Nutella, croissants, then somehow I ended up on sandwiches... and I didn’t worry about it too much because I just told myself “it’s your first cheat day, you’ll get back on track tomorrow”. But I couldn’t. Next day was the same. Woke up, ate a whole loaf of bread with 3 different toppings, ate croissants, ate chocolate.. ate everything I craved. And I haven’t been able to stop. It’s been 3 weeks since my first binge, and I do it again every day. I can’t stop myself. I’ve gained back what took me 5months to do, and I really just don’t want stop and stay at this weight. Please, anyone, just help me...