What do you think, positive today?

Randee • Mom of 8yr old boy and trying for #2 finally

So I took my opk sat and I thought it was positive, took a test Sunday and it was negative so I thought that was that. Took another opk today to make sure it was negative and it was a glaring positive right away. This has never happened. After a positive my tests go very negative right away. So what do you think?