Feeling super stressed out, advice?

Okay, so basically i went vegan in the beginning of December 2015 and i've gained ~ 10 lbs, basically all fat. I'm currently 173lbs 6' 21yo/M. I literally haven't added weight to any of my lifts since i went vegan :(. I average around 2300 calories a day because im pretty sedentary and i was just getting fat off 3000. Itms pretty f***ing frustrating. I was at 12% bf in december now im around 16% and it sucks, my confidence has plummeted and my muscles dont look nearly as big as they used to. I want to continue to be vegan but this just sucks.