tricks to help with bathroom issues??

Lauren. • 28 years old. Happily married since 6/21/14. Loving being a mommy to my 2 amazing daughters!
Is anyone else struggling with diarrhea during their third trimester?? I'm 31 weeks, and have had it on and off for about two weeks, and the last few days have been really bad. I got so dehydrated earlier this week from it that I was having an absolute ton of contractions (don't worry, I called l&d and my doctor and listened to everything they said). Luckily I have been able to stop the contractions by super hydrating myself, but it's tough to keep taking in this much water. I don't eat tons of greasy or spicy foods, so cutting back on that shouldn't be necessary. I'm just wondering if anyone has some suggestions for me!