OH sweetie, my heart goes out to you !
I've had IBS since I was 10 and it's no fun!
Alot of your symptoms can be caused by IBS, but there is something else going on when you're having blooding stool!
I'm no doctor, but when these things happened to me and I too was told everything from food poisoning to parasites, nerves, in my head, you name it, I went for a 2nd,3rd and finally 4th opinion I was diag. with Crohn's and leaky gut syndrome. Hon, you need to find a good INTERNAL Dr. and insist they check everything and before you see him/her, log everything that's going on, e.g. number of stools, texture, smell, etc., plus, have your liver enz. checked! I don't want to scare you Hon, but because I was shuffled around for so long, I ended up having multiple surgeries that didn't go well, I have a feeding bag now and still have the problems, except blood, and most of the time have to wear an adult diaper! Does anyone else in your family have bowel issues? That's important for your dr. to know....everyone is different, but whatever is going on maychild, blood is a "red flag" to get the right help.....it is treatable, you need to keep that in mind and chin up, OK?
I'll help all I can and so will others.....people are great here and very wise!
Get back to me, I'll keep you in my thoughts and prayers for you to find the right dr. Hon!
Shower of Blessings!