Low temperature for my 7 month old?

usually my daughter takes nap somewhere between 6-7:30 in the evening, though lately has been trying to stay up without it before her actual bedtime. tonight she stayed up without her nap and seemed fined, not fussy at all. around 8 pm I made her bedtime bottle, she eventually drank all of it, but it took a while, she wasn't very interested like she normally is. Her forehead seemed cold to the touch. She fell asleep pretty quickly. I took her temp. in her ear and that one read 96.6 and then used a pacifier thermometer and that one read 97.5. Aren't those temps. too low for a baby. Im a first time mom so i've never dealt with this before...should i be concerned? i dont know if i should just keep an eye on her, or if she needs to be seen by someone...im almost afraid to go to bed