Today is day 10 after taking abortion pill is brown discharge normal?

May or may not be: It is normal to have some bleeding or brownish discharge after taking emergency contraception. Typically it only lasts a few days, though. Given that you're has been ongoing for 10 days, it would be a good idea to get checked by your doctor. It may be that nothing is wrong, and your bleeding has just been longer than normal; however, you should get checked out in case something else is wrong.