Faint positive after abortion

I have a medical abortion on 01/18. I got back on birth control and we’ve been using condoms. I had a period 3 weeks after the procedure but it lasted 10 days. This morning I took multiple tests at home and they are positive. However I went to planned parenthood and they were negative there. It’s been 54 days exactly and PP couldn’t give me a definitive it’s from the abortion or a new pregnancy. They told me to wait 3 weeks and come back. Has anyone else had a similar experience?