When is purging serious?

It appears that the purging gives you some sort of relief. So while purging 5 to 6 times a month isn't the worst thing, I wouldn't want purging to become a bigger coping skill in your life (bulimia). Maybe try to pay attention to what is going on with you emotionally when you have the desire to purge. You might be able to see a pattern which could enable you to make different choices for relief. 

I would also suggest that you think about seeking counseling to be proactive. I would start to deal with the root of the issue before it becomes bigger and potentially an eating disorder. Take care of yourself. You deserve it. There are plenty of coping skills to use on a daily basis. Purging doesn't have to become one of them. 

Sincerely, Jill Palmer, LPC