Is my rabbit cold?? hes acting weird?

just this morning around 12, and 1 pm my rabbit has been flopping and relaxed in his cage. but it was 3 pm when i opened my window and it was windy. ever since then hes been standing up and its in this weird position . when i picked him up, i layed him on my lap and had my left arm around him. then i started to pet him with my right hand and he stuck his head between my leftelblow and stomach. hes never done that before and i want to know if this is normal or if . hes cold because hes been perfectly fine this whole week when it was 90 degrees and the a.c was on. i felt his stomach and he doesnt seem cold and i even put a small towel over him and he basically threw it off. and help t relevant to the question iss nice thanks