i've seen various responses to this, so can someone give me reason and why? i got the humalog 3ml pen 100iu/ml, and on their website and other posts it says do NOT store your pen after you've begun using it, but i've seen others posting always keep it refridgerated blah blah, which is what i would think? and then ones that havn't been used always keep refridgerated...whats the deal? keep it refridgerated after using? dont like their website says? thanks all!