I too suffer with IBS - im in my sixties and also suffer from anxiety and fear with heatlh issues. each time I suffer with IBS, Im running to the Dr! have had blood tests, cat scan, and have colonoscopies every 5years . it is horrible going through this...
im so sorry.it is very hard.my prayers are with you. did they recommend any treatment for ibs for you. having anxiety is not easy. it takes alot of courage to be able to live with it.and you sure are corageous coming through life all these years 
thank you Feathergirl
Pre Probiotics are not helping?