PCOS PREGNANCY

Okay so I have PCOS but my periods always start the same time every month. and I was told I couldn’t have kids. I ended up having a chemical pregnancy a couple months ago and lost the baby. Now I’m two weeks late, and I had unprotected sex as well as sex with a condom quite a lot the past month. I’ve taken tests and they’ve said negative except one that very faintly (could barely make a line out) said positive. I was told I could just have really low hcg which apparently comes with PCOS but still be pregnant. Any ladies have experience with this?