Another newbie that can't read a chart

Hey everyone, I just got my IUD removed on Oct 2, so this is my first chart after. I was told that the IUD doesn't effect ovulation so I wouldnt expect the chart to look too far of, but does it seem strange that my temps never rose? I take my temperature at the same time right when I wake up, the only thing that has changed is that we keep our room cooler at night recently, would that totally mask a temp rise? Thanks!