Can stress cause physical ailments?

I have severe health anxiety and have been crying all week because I believe there is something incredibly wrong with me and I am waiting for test results. I then got a nose bleed and have been in an absolute state of shock and terror ever since.

Can crying and being incredibly stressed cause a nosebleed? Does anyone have any tips for health anxiety? I’m so terrified and just need some friendly advice. I have been to the doctors but everything takes so long.