Help! No temperature rise??

This chart doesn't look like I ever actually ovulated, does it? I've been TTC for 8 months and none of my other charts look like this. Every one has had a clear temp shift.  AF is due Monday and I always always have 3-5 days of brown spotting beforehand.  None this cycle.  Also, I had EWCM for two days on CD19/20... Can anyone offer any insights??