I am 20, Female and weigh 137 and I am 5 foot 2 and had a baby 5 months ago. For about a week I have been getting an odd feeling on my left side near my abdomen. It started feeling like something was moving then it started feeling like a twitching feeling. Now it happens more often and feels like a pulsating feeling. I am on a birth control pill and about a month ago I was very lightheaded and weak all of the time and would get blurry vision which was either in the form of circles or lines that followed with a major headache. The hospital told me that the blurry vision and headaches were migraines and that I was weak and lightheaded due to dehydration. The gave me fluids and felt way better and got my energy back. I still get the migraines every now and then. But I was really wondering about the pulsating feeling in my left side. It happens maybe more than 10 times a day at this point.