I Have Had IBS, Dissyness, Loss Of Appetite And A

I have had IBS, dissyness, loss of appetite
And a weird random rash for two years. Loss 40 pounds in two months with no effort and and just turned 44. Went to specialist after hospital trip for dissyness and confusion and positive ana test. Primary wanted to rule out lupus. Went to specialist and literally 2 minutes was sent out door with there's no way you could have lupus because your too old. Shook my hand said good luck and tht was tht. Should I see another doc or move on? Thanks for any help or advise.