🙁 could my BTT be wrong??

ca

I am so sure that I actually did ovulate on Friday 5th. I had positive OPK, EWCM and also stitch pains that day only. The next day my nipples started to hurt.

Ff says I ovulated but I only because I had to disregard one of my temps because I didn’t sleep well that night and I think this mornings temp I need to disregard too. I hardly slept and had to take it at 4.45am.

Could my BTT just not be accurate and I could have actually ovulated.