What Causes Severe Diarrhea?

Monday I started voiding watery stool, a lot, early AM till about 6 AM. No other symptoms, smelled almost like dehydration. Then after I ate at noo till late into the night. Needed to stay home. Now since then , I do the same routine except a lot less since I eat a lot less. I still urinate plenty but now my a land stomach feel like I ve pulled all my muscles ,my hemorrhoid agrivated and this AM it smelled skunky and felt more acidy. This is day give. I took Imodium the last few days in the AM but stopped thinking it stopped. The is here the gurgle later in the day. Yesterday I took a probiotic and thought it was working, I felt better. Now it 2 AM, I m back on the toilet. Should I see a dr? What do you think.