No BBT spike with Ovidrel?

So this is my second IUI with Femara but my first with the Ovidrel injection. I was advised to not worry about taking my bbt or ovulation tests. I had very pronounced ovulation pain (at two separate times of the day in two separate places around my lone ovary) the day of my IUI, which was Tuesday. My bbt seems to be slowly creeping up with no definite rise yet 2DPIUI. I'm worried I didn't ovulate or am not making enough progesterone considering the meds should have made all four big follicles and four small follicles go. If it matters, my house is cold at the moment as our thermostat is malfunctioning. When I wake up it's mid 60s Fahrenheit in the house. What do you ladies think?