Anyone help would be much appreciated as I'm confused at the moment.

So I'm on cycle day 19.

According to my bbt chart, I have not yet ovulated. I bought some opks just to see if I can help myself determine when I may be ovulating but the test doesn't look like its anywhere near?

According to this app, I should ovulate on cycle day 14- I have 27 day cycles. Fertility friend has also said I haven't yet ovulated based on my data.

Can someone take a look and analyse please.

TIA