Hey Shelly! Congratulations on the baby! I'm sorry to hear you're still having diarrhea. Big bummer. There's always more remedies to try and at this point you are probably your own best advocate. The frustration that GIs feel when trying to treat IBS is palpable - rest assured that they probably feel equally frustrated that they are not able to help you. I know I would if I were the doctor in your situation.
That being said, it's always a good idea to go for a return visit if you feel like you are getting worse. He probably won't run any more tests, but he may be able to make you feel less anxious about where you stand. Hopefully we can too.
Are you taking any medications at the moment? Supplements? Besides the diarrhea, are you having other symptoms? Pain, bloody stools, fevers, anything like that? Can you also refresh my memory and tell me what specific tests you had in the past?
I am also having a lot of diarrhea and I know how frustrating it is. Even though it doesn't scream and cry, med school is a little like having a baby - you can never get away from it (feel like it's always attached to your boob) and it demands more than the maximum amount of energy you've ever had in your life.
Hang in there. I hope you start feeling better soon.
I just read a study about taking calcium polycarbophil in the journal Hepatogastroenterology. In brief: 14 patients with IBS-D and 12 with IBS-C were given calcium polycarbophil for eight weeks, and their colon transit times were measured with radiopaque markers in the colon. The patients with diarrhea reported fewer bowel movements, more solid stools, and reduced abdominal pain. Patients with constipation reported more frequent bowel movements, looser stools and less pain.
You can read the whole abstract if you do a search for it on www.pubmed.com. The first author's name is T. Chiba. Even though the study size was small, it looked promising. You can find calcium polycarbophil at the drugstore - brand names are Equalactin and FiberCon.
Might be worth a try! I haven't tried it myself but I might ship myself over to CVS pretty soon to check it out...