I don't feel like he's into it...

DH says that he is 100% ready for a baby but the last two nights that we BD he didn't seem too into it....kind of makes me sad...and I don't know how to bring it up to him.....
UPDATE: Talked to DH this morning and it was exactly what everyone was saying.  He is over thinking things and doesn't want to let me down if we don't get pregnant this month.  (This is only our second month trying) I told hi that all pressure is off and when it happens it will happen.  Everything is right in the world again! Ovulation date is supposed to be this Sunday so maybe we will get our BFP in a couple of weeks, if not, we will try again next month! Thanks to everyone who left their input! :-)