HOW LONG DOES OPK STAY POSITIVE?!

aamina๐ŸŒธ๐ŸŽ†๐ŸŒˆโœจ๐ŸŒ›

i forgot to test a few days and then the morning i took it it was SUPER positive. i baby danced right after! is it possible it was positive the day before this and i missed ovulation?