I know how you feel, I hate to not be noticed. Everyone around you acting like your ok, not seeing how you really are. Is hard, frustrating. You feel miserable, look bad and they just go about their day as if you looked normal.
Try not to let it get you down, it only makes you feel worse. Know there are many of us here that do understand and can see the misery of how you feel in your words. We are here when you need an ear, glad you found this place. This place is what keeps me OK, when those around me act as if they do not notice or care.
Hope you feel better soon and get a chance to see a doc.