Chronic stomach aches

My husband has had stomach aches since he was in Elementary School. He is now a few years shy of 30 and has never recieved answers from doctors as to why he never gets better. He has tried meds for acid reflux and they don't help. Every morning he wakes up with a stomach ache that never really goes away all day. It's a vicious circle that I have wished for years that I could help him with. I had given up hope, as he had long ago, until I found this site. There must be something he can do, but I have no idea where to start! Can you point me in a direction? I am happy to answer any more questions about his life/lifestyle if needed.
Thank you,
~Suzanne Tweet