I feel like I’m grasping at straws here...

OK so I’m probably going to be having a chemical pregnancy but I’m hoping that somebody could tell me that they’ve had a positive outcome... I had my day 21 progesterone checked and it was 13 and then I actually got another progesterone drawn the next day because I wanted to see if it will go off and actually it went down to a 6... I totally thought I was out this month but lo and behold I got a positive pregnancy test... well I told my doctor is and they are telling me that it will most likely be a chemical pregnancy. The thing is I got these drawers at seven and eight days past ovulation is there still a possibility that my progesterone levels could’ve went back up after implantation??