Oh my...

My BBT chart is a hot mess.  There are two options, I didn't ovulate, or I did and my temp taking just sucks.  
So for the last 4 days I have been nauseous every evening.   I finally broke down this morning, and took a pregnancy test.  Negative.  I don't believe in tweaking pictures (to each his own).  I do realize I have no idea when I ovulated, so I don't know when my 10 dpo is.  
It's not typical for me to be nauseous, ever.  It's just not like "me". I haven't thrown up in years, and years.  So this isn't a normal period symptom for me.  
Any help/advice?  I don't think the ovulation indicator below is correct.