Hi. I Am / Was About 3 Weeks Along. I

Hi. I am / was about 3 weeks along. I went to see the GP as I wished to abort the pregnancy. GP inserted about 5 Cytotecs vaginal and advised to take the rest orally, 1 tablet 3 times a day. I experienced some heavy cramping and bleeding with clots about 4 hours after the process was initiated. How long does an abortion process like this last at 3 weeks pregnant and how do I know if it has worked for me or not?