IBS and Autism

Hi everyone, I am 50 and was diagnosed in January with Autism and ADHD, I am not getting any professional support, where do you all get support from? I also have IBS which I am learning is very common in people with Autism, it is particularly bad at the moment, probably the worst its ever been. I have started to follow a FODMap and take Immodium every day! Ho do you all deal with it?