Nooooo worries dear that's happened to me before. What it is, is something the penis can weigh a lot of pressure, remember the bladder is very near the vaginal walls. The weight of his penis could put pressure on your bladder, making you feel you had to go to the bathroom. The burning I found is natural...It's happened to me several times, and the stomach making a really weird noise is probably just natural noises and your worry about it made it seem a bigger deal than it is. Have you felt better since?