How do I take an accurate BBT when I am up multiple times throughout the night?

I know you are suppose to take your BBT after 4 consecutive hours of sleep, before you get out of bed and at around the safe time every day.

I have been taking my temperature at around the same time every day however there are a few nights when my son is up throughout the night for whatever reason and I need to get up to take care of him. For example last night he was up at 3:30 and I took my temp at 5.

How will this effect my chart?