This Started When I Was In The Keys For 4

This started when I was in The Keys for 4 days and ate seafood at every meal. I came home for 3 days and then vacationed again in a seafood rich environment where I again ate a lot of different seafood. I've had diarrhea off and on since then Prior to that, I rarely had any intestinal upset. It's been a while and I'm tiring of it. When I take Imodium it helps but it's temporary relief.