Want to have a baby but not sure if I can? Please read!

Making it short and straight. I have sex regularly, always without protection and does his thing inside me. 
Not sure why, but out of all this time months it's been, very close to a year I have not once missed my period, it's making me wonder!!! 
I'm very willing to have this chance but I'm not sure why it has not come yet... 
I'm wondering can I get preg or is it maybe him?! I'm at a loss. Any suggestions? Thanks!