Hello, and I hope I can help you today. It is possible that you were too far along at the time you took the pill to successfully terminate the pregnancy. If you feel movement, it is possible that you are already four to five months along, especially if you have irregular periods. You will need to see a doctor and have an ultrasound to accurately date your pregnancy. Depending on the laws where you live, you may or may not have the option for a surgical termination at this time. I strongly suggest you seek treatment by a properly licensed physician for the proper evaluation of your situation at this time. There is also a possibility that the medication you already took may have had an effect on the fetus already and the doctor will discuss these risks with you. I hope I was able to answer your question adequately and that my advice was helpful. Good luck with your situation, Dr. Brown