What Causes Heavy Vaginal Bleeding,cramps And Nausea After A Chemical Abortion?

Hi, I did a chemical abortion nearly 3 weeks ago and I am wondering if the symptoms I have had are normal. I had heavy cramps and light to medium bleeding for at least 8 hours after the mifeprostone pills. The bleeding continued for about 5 days after that. I didn't feel pregnant at all, only weak with some cramps. A week after that I started to get some heavier cramps which I thought were maybe with my period trying to come back. There was some slightly colored discharge, with no odour that i could notice, with those cramps which lasted a few days on and off, but no bleeding. Now I feel a heaviness or still a swolleness and slight pangs of cramps now and then. I have very slight nausea sometimes which make me nervous that I am still pregnant. Would a urine test at 3 days before the 3 week mark after the abortion give an accurate reading on whether or not I was pregnant still or needed further treatment? I am in Ireland and it is difficult to get an ultrasound. thank you.