Here is another vote for a new doctor. Purging at all is bad news You need support.

You may also need to evaluate your goals. You might be at a good weight for your height, and could move into lifetime maintenance, with more variety, and fruit (for the cravings).

If you aren't happy with your body at that weight, perhaps you need to tone up more than just lose pounds. Is your body fat measurement accurate (28%)?

Most of all, don't beat yourself up for falling off plan. And don't purge...just accept the detour and remember that tomorrow is a new day. This is a way of life, and you can't expect to be perfect all of the time. The occasional deviation is not going to harm you in the long run.

Good luck!