Either direction with weight can be an ED......overeating is just as much of a disorder as not eating enough. When I was in an eating disorders treatment center, there were more who were overweight than under. It's just as unhealthy for the body also.
I have many friends who's stress causes them to eat as much as stress for me causes me NOT to eat....both are problems.
Glad to hear that you are going to the gym in your new town.....give you a chance to meet people & also mainly to care for yourself. You know, the exercise & working the weight off slowly is the most healthy thing for your body. I had gained way too much after loosing way too much but had horrible migraines where I couldn't get out of bed without getting sick. Once we found a med to control the pain, I was able to get back to riding my horse & I was surprised at how nicely the weight started to come off with just riding my horse as exercise. Unfortunately, I went through a trauma just after I started riding again & the stress caused me to loose too much weight again. But now I am at a healthy weight.....so it is possible & it does feel good.
Hope you can keep up your energy & desire to get healthy & keep working at it because it's really worth it.