Yes, I too have suffered for years with stomach acid and digestive problems. Since being diagnosed with ms my neuro now thinks it may have connections with ms, also suffering stomach spasms and often food just wont go down into my intestines. Ive found when fatigued particularly stomach acid seems to get worse as does the passage of food. There is a pill called motilium which helps food go through the system faster, Ive weaned off them thinking I no longer needed them, but I do. Im about to start them again to see if they help.
One thing I have noticed helps, eat little and often, no big meals and being upright for as long as possible as lying down makes the situation worse.
I seriously think it is nerve related in that our stomachs are making too much stomach acid and if our food refuses to budge - hence the muscles required to shove the food where its supposed to go working sluggish, then we have to try calm it down by Omeprazole and try asking for those pills. Afraid it will be medication from now on as lots of msers too have similar problems. There must be a connection somewhere - nerves, muscles etc.
Hope yours soon resolves. Im sat here with acid coming into my mouth all the time today and yesterday. driving me nuts too.