Could I have an eating disorder?

I’m 21 and I don’t/can’t eat much at all. I never have since I was about 13. I’m unsure why as I don’t purposely starve myself, I just never feel hungry, but I do have days where I will eat a lot.

I’m not fussy with food I eat most things, I like quite a range of foods. However a typical day for me will be that I won’t eat until dinner or I will just have snacks like a peperami or something. I’m not a massive sweets or chocolate fan and eat these in moderation anyway. I will have the odd day where I will eat something and I’ll get the taste for food and will literally raid every cupboard in the house😂 this is normally later in the evening

I’ve looked into eating disorders before and nothing really fits me. I don’t have a fear of food? As above I don’t do it on purpose. I don’t have a problem with my weight or my body. I’m not self conscious of anything. Just the usual thoughts everyone has once in a while that I could do with losing weight but I’m not going to do anything about it and I don’t stress. If I lose weight I lose weight if I put it on I put it on🤷🏼‍♀️ The issue is that before I would just not eat until lunch/dinner and have 1 meal a day at least but it’s getting to the point now where it’s getting to dinner time and I can’t even eat half a jacket potato, but I will force myself to keep eating past feeling full until I am really stuffed, but that just makes me uncomfortably full. I constantly feel sick and when I feel sick I can’t eat. I try to eat more even if it is snacking more to get what I need in me but when I’m not hungry I literally can not eat. The thought of it going in my mouth will make me gag.

I have 3 children and even when I was pregnant with them my eating habits did not change but now I’m starting to get to the point of feeling sick everyday and I’m struggling to look after them. I’ve put off going to the doctors all this time because what do I tell them when not a single eating disorders fits what’s wrong with me. I just want to know if this is a eating disorder maybe just a rare one and if I should go get it checked