Bowel/rectal spasms for years

Hi:  I'm usually on the fibromyalgia forum, but thought my question was more appropriate here.

After my 2 children were born (youngest is now 20), I had severe tearing each time and lots of stitches (my first child was over 9 pounds and I'm fairly small).  After my youngest was born, about 2-3 months later, I developed uncontrollable diarrhea, no matter what I ate. 

Long story short:  They never did determine the cause of the diarrhea.  I was put on Elavil (amitriptyline), which the gastro doctor said would dry out my system.  It took months, and I was on Elavil for years, but gradually, it got better; no watery, explosive stools.  The looser stools didn't completely go away, though, and I still get occasional flares.  I do have a bit of urgency when I wake in the morning, but just somewhat loose stools; usually not diarrhea.  I should also mention a neurologist determined I may likely have mild cerebral palsy, so that may explain some of the spasms.

A gynecologist said I could have plastic surgery in the rectal area and it 'may' help (no, no money for that and sounds a bit 'iffy.')  I do Kegal exercises which seem to help a bit, but still get a type of 'must push' feeling (as in childbirth) often when I get any type of diarrhea for any reason, even after it has run its course.  It's so hard to get it to stop!  I also more rarely get rectal spasms which wake me at night and I can get relief from walking and/or sitting on the toilet and gently pushing.

The only specific food I seem to have trouble with are boiled or scrambled eggs (guaranteed diarrhea within a couple of hours), and I try to steer away from raw and rough foods.  Once in a while, dairy can cause problems, but usually dairy products are okay.

I strongly hesitate to go back on Elavil, because it affects me so strongly.  Even taking a small amount before bedtime means my next day I'll be very sleepy.

Does anyone here know of any other way to get these spasms to stop?  I don't have them all the time anymore (used to be housebound in the early days of this), but it's still a bit 'iffy' to venture out when the spasms are 'active.'  Maybe there are other exercises or such to build up those muscles?

Any ideas very appreciated!  Thank you.

ETA:  Forgot to mention I had a flex sig 20 years ago and was told they "never saw it move through that fast!" :)  and a colonoscopy a couple years ago, which they said looks 'great.'

Thank you, Sherry, for your response.

I really should give the fiber supplements a chance (products such as Metamucil, correct?). I've been leery of them, though I've read they help with both IBS-C and IBS-D. Just a chicken here, I guess! :) Always afraid they will cause more irritation, though I don't believe they usually do.

Thanks for the heads up on the Bentyl and Levsin. The Bentyl rang a bell; I think I took it for a short while years ago. I'll make a note of it this time.

Thanks again!

The way I control my spasms is by identifying all the different foods that starts them and then don't eat them.
Citrucel is the only fiber my gut tolerates and I've tried almost every fiber there is.

I frankly think doctors are little use when it comes to food intolerances because it seems every person is different. Nothing on my "intolerant" list fits any category: seafood, insoluble fiber, fruit including juices and jam, citric acid (used in a lot of canned foods), caffeine (duh), chocolate (only the good kind), rice, eggs and more.

The good news is that as time goes by some non-tolerated foods become tolerated more. Milk, ice cream and cheese used to be baaad and now are not a problem at all.

I keep Bentyl in my cabinet for the bad times which aren't often unless I eat the wrong thing on purpose (chocolate haha).

Have you ever tried digestive enzymes? I haven't but others have and report good results.