I agree with Ashelen. Make an appointment with your doctor to find out what is causing your symptoms. Lots of conditions can cause pregnancy-like symptoms. You need a diagnosis.
you need to see your doctor so they can run a blood test. you did not say, but, have you missed your period more than one time? You would have to be several months along (with several missed periods) to be feeling any movement, especially right under your ribs. You need to be seen so they can determine why your symptoms are occurring, and determine if you are in fact pregnant. pregnancy symptoms do not mean anything by themselves, they can be similar to PMS symptoms, and it will require a blood test to tell you for sure.