Hi I Have An Question I Have A Background Of

Hi I have an question I have a background of a eating disorder anorexia I am recover now. I'm at a healthy weight but I recently relapse for a month and half and I have been eating under 700 calories a day yesterday I have decided to increase my calories without really counting calories and I have notice a weight gain in one day. I am bloated and feel really sick plus gain 10 pounds. I would like to know if this is normal and what can I do to prevent anymore weight gain and for a month I have I been taking laxative everyday so now my body has gotten use to it not sure what to do?