What Causes Sudden Loss Of Vision And Pain In Lower Abdomen With Diarrhoea?

Hello, I m having a hard time figuring what is causing certain symptoms that have occurred. The symptoms follow with sudden temporarily loss of vision which happens gradually, severe lower abdomen pain; left lower abdomen pain which makes me cramp/bend over due to the pain, I then can hear a gurgle on my left side and once I have used the restroom I am perfectly feeling much better. I get temporarily loss of vision, loss of skin/face color; pale skin, severe lower abdomen pain, and then diarrhea. What might cause all of that, one after another??