Weight gain/ eating like crazy

I'm 13 + 4 and prior to getting pregnant I had lost 35 pounds on weight watchers. I'd kept my weight off for about 1 1/2 years. I did ok with eating the first few weeks after I found out I was pregnant but about 6 weeks ago I just started going crazy eating anything I wanted and however much I wanted. I cried weighing myself this morning because I am up almost 15 pounds. As a former weight watcher my first instinct is to just go back to counting points and try to lose some weight because I know I'm gaining too fast being that I'm only near 14 weeks. I'm not throwing up at all. I crave a lot of junk food. Will I hurt my baby if I try to lose a little?