Is anyone here experiencing low back pain with knee/joint pain and sometimes flu-like symptoms achy all over due to IBS, which is still undetected from my end (pun intended). I had a bout with amoeba parasites about 3 years ago, 1998, went undetected for close to a year and got rid of them around May of 1999 been having problems ever since including a bout of sinusitis last year among other things. Has anyone had this kind of experience and can shed some light on my situation. I'm seeing a very good gastro in NY whose done a sigmoidoscopy and will be doing an upper endoscopy soon to do a lot more eliminating of possible conditions. I think because of undue stress and antibiotic use which caused candida albicans flareups on occasion are the culprit, as well. Recently, I've also been alternating between C & D. No fun.