2007 Rx8 start up

Alright, I'm new to this forum and I finally got my Rx8 and I've had 0 problems with it until this morning when it was rather warm out but no more then 70 degrees. I went to turn the car on and it cranked for longer than it normally does and it didn't start as quick as it did. My 2007 has only 35000 miles on it and has never been in any accident. The dealership changed my oil and did all the tests to it and ever since I had it I've babied it. I mean every time I fill up I check the oil and I haven't had to add any oil yet but my Engine Coolant Level comes on every time I drive but the level isn't that low and isn't that hot! Need some assistance to figure out what I need to fix! Thanks!