I can realise that you have very tough times these days but these pain killer can lead to several side effets if taken for long duration in high doses as all of these cantain one or other narcotic group of drugs.
for management of crohn's disease you can take salazopyrine or mesalazine,
metronidazole, iron ,vit B12, folic acid,an deven
prednisolone but all under the guidance of a physician , you should keep on getting
complete blood count regularly, you can even go for
immunotherapy if above mentioned therapy fails.
wish you all the best.