I Had Anorexia. I Was Down To 90 Lbs For

I had anorexia. I was down to 90 lbs for 5' 2' and 13 years old. I'm 14 now and is 105 lbs but I've noticed that I'm starting to binge eat. I exercises still but in a healthy way. I'm wondering when I'll get her period back. I started when she was 11. Should I gain more weight?