When should i test

Brianna

I had miscarriage Feb 2022, and have been trying to track cycles since. Today i took a pregnancy test and got BFN ( according to OPK i am 8 DPO) according to my strips, when did i ovulate ? And when do you think is a good time to test ? Is it normal for your OPK to stay high even after ovulation? Mines has been high for the most part every day but i do have PCOS.