Hi. I'm 34 And I'm Diagnosed With Anorexia Since I

hi. I'm 34 and I'm diagnosed with anorexia since I was 12. My eating is not great ..I still purge even I eat small amounts.my BMI 15,so not low. The main problem is I feel bloated and full all the time..even if I eat small amounts I'm just bloated.. After the whole night I can still purge indigested food.. That's puts me off from eating even more... Why my digestive system being so difficult?? Shall I see my GP or just wait to pass??
Thank u x