Positive opk before BFP?

Amanda
Hi ladies!
​I am TTC #1. I have 34 day cycles and ovulated this month (and last month) at day 23-24. I am 8 DPO with AF due 3-5 days and randomly took 2 opks last night which were SO positive! Repeated them this morning and also positive. HPT still neg. I've read Lh surges before AF, but have also read some women get pos opk before BFP- was wondering if this has happened to anyone? I have no signs that AF is coming! Thanks in advance!! : )