Help. Send any hope or bring me back to reality

We’ve been ttc for 2 years. Doing IVF next cycle. This is my first unmedicated cycle in over a year. I didn’t expect to ovulate but I did have a positive opk on cd 18. A week later I started brown spotting. I’ve been spotting every day and this is my 6th day in a row of light brown spotting on a tampon. (I’m only putting a tampon in bc I think it’s my period starting). However no period yet. I am due to start on Wednesday which would be 14 days from my opk.

My question to you…. Could this possibly be something or am I just getting my hopes up? I have severe testing anxiety and cannot bring myself to test bc I’ve only ever had negatives and stopped doing that to myself a long time ago.

Or is my body just off because of the unmedicated cycle?

Thanks. 💔