So confused!

I went in this morning for an appointment for a completely different reason and asked for a pregnancy test. They told me it was negative although I have gotten multiple positives at home. They called me later in the day to say it actually was a faint positive and to go in for bloodwork, which I did. My period was due today, I received my first faint Saturday. Below is what I received from the blood results. Why would an ectopic pregnancy be a concern? All my test in the past have noted that it had to be greater than 4 mIU to be considered positive. Why would they list this one as 3500?? I let them know the first day of my last menstrual cycle was June 2nd. Might this be a mistake? I had a miscarriage 2023 and blighted ovum 2024. Now they have me all freaked.

Positive test below