First of all, no bashing allowed on this forum. :>) This is a safe place to discuss abortion. It's a woman's right to have one for WHATEVER reason with no guilt involved.
So, this is a really good question. First, let me say that post abortion there are guidelines they want women to follow including NO sex for usually around 6 weeks. It's a procedure that you must heal from and doctors want you to have an appointment to be checked post abortion to give you the go ahead for sex.
You 'could' still have left over hormones in your system from the pregnancy. I would wait to see if you get a period soon since it has been three weeks since the procedure. If you don't in say a week or two, then take another test. If it is still positive, it will be time for that post abortion check by a doctor and you'll need to have a discussion about the positive tests them. good luck hon
Also I'm having a lot of clear white discharge sorta thick but sometimes watery! Is that ovulation?