And welcome to the chronic pain forum, although I am sorry for this pain you are suffering.
I can tell you that in my personal opinion, there is a connection between the nerves and IBS.
When I was a young girl and all the way up into my early thirties, I suffered with IBS something terribly. Then, when I had my back surgery, everything in my intestines calmed down. The doctor said that the nerves that innervate the intestines were affected by the surgery. Now, I don't suffer with IBS or anything like it anymore.
As far as the muscle spasm, that could be something else or it could be related. I just don't know.
I do hope you find relief soon. I have not heard of that complication from that surgery before. Are you sure this doctor is on the up and up??
I will pray for you Mary.
Moderator Chronic Pain
Believe in yourself. Be kind to fellow humans and animals. Take time to smell the flowers and the coffee.
And by all means, when you are down, ask me for help. I will be there.