Beta test came back low HELP!!!

So I found out last week on friday I was pregnant. I took another test sunday and the line got darker and the digital came back postive. All test were FRER. I went to the doctor yesterday (Monday) and got my beta back today and it was 35. I assume it is low because I am SOOO early. Last Monday I took a test because I was spoting a bit and it said neg which now I realise that was implantation. Has anyone had a similar experience? Ive had multiple losses and have PCOS im on progestrone suppositories. The doc. Checked all of that and it came back in normal ranges. I just need postive vibes and stories🥺 im so scared we will lose this baby to.