Hi Misery!

I would suggest that you talk to your doctor again about the purging. Even if it is less than 2 times a week, this is harming your body way more than you may realize and you need to find some help in stopping that behavior.
Regarding the cravings...I noticed that you are eating a lot of ham. Check the ingredients list. Many times ham is cured with sugar or has sugar added to it and that may be continuing your cravings.
I'd also like to point out that at 171 cm (that's 5' 7"), you are already at the lower range of a healthy weight for your height. You may also want to speak with your doctor about whether 120 pounds is a realistic weight for your height and bone structure as well.