Help! Positive clear blue after bleeding?!

Came off my pill 6 weeks ago, didn’t know when I was ovulating but then AF arrived 2 weeks ago so started tracking from then. ovulation tests showing LH surge yesterday which was earlier than expected - but still showing high this morning.

Did a clear blue preg test and it’s showing 3+ weeks pregnant?!? My AF was very heavy, is it possibly implantation bleeding or likely chemical pregnancy?

The HCG level threshold for clear blue to show 3 weeks is 2,700 which is quite high. Wondering if I’ve somehow miscarried but my levels kept rising 😭 Trying to get a doctors appt to see if I can get a scan.

Anyone had this before?!?!