BBT chart and cold symptoms

Trammy

Hi,

I’m in the 2 weeks wait and desperate to know if I’m pregnant. I’m about 4-5 days from AF and recently got super congested with cold/flu symptoms and some light cramping. I’m 11dpo and took a test this morning with a BFN 😩

Here’s my bbt chart, can someone help to know if there’s any chance?