Non-stop Diarhea

I'm 22 years old as of july, and i'm really not in the best condition of my life. I'm overweight and I realize that I eat consistent amounts of junkfood...Greasy crap, etc; because of this I believe i've developed ibs (irritable bowel syndrome) but i'm way too nervous and embarrassed to go to a doctor about it.

On top of that, I know that I have hemrhoids too.

My question is, about 5 days or probably more ago I ate some really spicy homemade burritos. Because of this, i've had nothing but watery/diarhea stools since then. I tried to take fiber pills, and drank benefiber today and i'm kind of still waiting for the results....Except an hour ago, when I went to the bathroom...The stool was still watery with small chunks of soft stool in it.

I'm rather nervous because i've never had diarhea this long before. When it comes out, it comes out really acidicly. And my anus will burn for hours so I usually end up taking a shower after I do these bowel movements. As I said before, i've never had diarhea this long before and I was wondering if this might be life-threatening.

There's no blood in my stool. If anything, I was wondering if maybe it might've been because i've really been stressed out/nervous lately about it. I get nervous about it non-stop....That it might be something bad. I thought maybe my nervousness was causing the diarhea.

Does anyone have any answers? I don't have insurance, I don't have benefits, and I don't have any money. So i'd have to end up going to the er at a hospital and paying 300 dollar bills for a check-up and prescription.

Should I wait and see if this goes away in another week?