I didn’t start charting until after my period ended and it’s not been at the exact same time each day so I know it’s likely to be unreliable. I usually have irregular periods due to pcos so I don’t know if I ovulate. I did get a raise but it didn’t stay high for 3 days running like it’s supposed to to indicate ovulation but I did get mild symptoms. My bbt has now risen quite high since and I had a big drop today, now possibly 11/12dpo. I took a test yesterday but it was a clear bfn. Could the drop be implantation or is it likely my period is coming? I think I’m due on this weekend. This is the first time I’ve tried bbt and I was pregnant first month with my children so not sure if there’s still a chance or if I’m definitely out this month. Any tips? Ty