BBT dip due to cold room temp?

Al

I am really bummed because I thought I had ovulated in the past few days and my temp had shown two ‘higher’ temps (for me) but the third temp this morning was back lower than before. However, when I woke up, it was definitely chilly in our bedroom. Can BBT be affected by the room temperature? I might be grasping at straws here but I just don’t understand why my temps are so low.