TMI but need some insight!!

LeeAnn
Hi Ladies ... 
I am pretty positive I have read about this before I can't find any previous posts to help ... I am 4w5d with what I call excessive diarrhea. It started minimally yesterday (like when you eat something your stomach doesn't agree with) but today, it has significantly increased. I have probably gone to the restroom a handful of time since 5 AM and it is only 1 PM ...
How long does this last? A couple day? Weeks? 
Trying to drink extra water so I don't get dehydrated so now I feel like I am urinating every 30 minutes. 
Help!! 
Thanks!