I was wondering if someone could give some input on a possible injury. I was doing situps on the decline bench with a 45lb plate, where i like to squeeze my abs really hard on the negative portion of the lift and go down about 5 seconds. I did 15 reps, and got off the bench to walk to the water fountain. As i started walking I felt this strane feeling like my intestines descended into my pelvis. It didn't feel too painful, just really awkward. And then like after 30 seconds of standing, seemingly it felt like they popped back in. There's no bulge or anything in my abdomen. I took the next day off and havent had any pain since, so I am wondering if possibly it was just a really bad cramp? I will be going to the doc in a couple days, but am curious to know if anyone else has experienced something like this.