High temp, pregnancy related?

Hi guys,

I’m on Day 6 late for my period. (I have a very strict 28 day cycle) I’ve taken 3 tests. The first was faint but there, second was also faint but more than the first, and I took one this morning (different brand), no line at all. My body temperature has been like 99.0-99.4 all week. Has anyone ever noticed this being pregnancy related? I keep my house on 69° and woke up soaked in sweat this morning. Other than that i haven’t had any symptoms. Just weak feeling and not feeling well enough to eat. I called to set up a blood work appt to confirm some people have told me to wait until 1-2 weeks after my period is late. Thanks for your help!