Loose stools for 6 days after appendectomy

45, Female, 127 pounds. Hello, I had an appendectomy last Sunday. I did not have bowel movements until late Tuesday night/Wednesday morning, but it’s been all diarrhea. I took Imodium Friday and it stopped it for about a day or 2, and now it’s back today. I can never get it to wipe clean either. I started Florastor probiotics hoping it would help, but doesn’t seem to be working. Is this normal? They did not send me home with antibiotics, they gave me a 30 minute IV bag of antibiotics, Zosyn, on the day before I went home for a UTI.. I’ve been eating mostly the BRAT Diet too and no stomach pain, other than where the incisions are. I go to urinate and then the diarrhea comes out at the same time, so most of the time I didn’t even know I was going to do #2 when I go to the bathroom to pee. Thank you for taking the time to read this, any advice/tips would be much appreciated. Thank you.