Selective eating disorders

Hi, I watched a lady on the television today who had been diagnosed with a selective eating disorder, I have been struggling with panic attacks/chronic anxiety for over 3 years now and it has took over my life, about 1 year ago I went through a stressful point in my life and one day while eating a pizza with my ex partner I suddenly couldn't swallow the food in my mouth. I went extremely hot, began sweating, felt like I couldn't swallow and felt like I was going to be sick. I went downhill rapidly and could not eat infront of anyone including my parents. I am now a little better and can eat infront of a select few people, but I tend to stick to what I know as safe foods such as chips which are easy and fast to swallow. I have always been a fussy eater but now I feel like my life is on a rota. I don't eat before going anywhere incase I feel sick or panic, I no longer eat meat because my head thinks of horrible thoughts such as the animals being killed although I never had a problem with meat beforehand. I tend to avoid eating out or infront of more than a few people or i panic. I usually stick to foods that can easily be swallowed if I am around people such as chips, crisps, rice, yogurts etc. if I'm alone I don't feel as bad and tend to binge for example today I went without food all day till 9pm then binged because I was alone. This issue has got me rock bottom, I feel weak alot of the time and feel like I have totally lost my confidence and social life. I would appreciate any sort of advice on this issue as I just feel stuck in a rut sorry for babbling on x