Did abortion abt 2 wks ago first 3-4 days i was bleeding heavily with pain. i started spotting dark brown blood now im spotting red blood no pain.

Give it time: You had an abortion less than one month ago. Your body will take time to recover. Schedule a visit to discuss your birth control options which will give you menstrual cycle control and avoid an unplanned pregnancy

Okay: The bleeding pattern you describe sounds okay to me. It's normal to have different color blood, different amounts. And spotting after any miscarriage, including abortion. If you bleed heavier than a period, that would be reason to go to Doctor or emergency room. But you sound okay.