9DPO 99.0 temperature

My SO and I have been TTC for almost 2 years with no luck, I of course was impatient and took a test today which I know is way too early and came back BDN I'm give or take 9DPO (according to glow 9 days but I think I might of ovulated a day before.) AF is due in 5 days, for the last week I have had some weird symptoms and just have not felt right, one of the symptoms is for the last 7 days I have had a tempature of a steady 99.0 and my temperature is usually always spot on at 98.6 anyone ever heard of this?? I'm hoping the test ends up wrong!!!