Thanks for the chapter!
Ok, Wakana being dense, bit of an airhead, and extremely unexperienced, but MC should know what it means to knock a girl up. That and didn't read full explanation of message to realize point was to get partner pregnant not just relaxed from the massage. Also, why is he always calling her Kaichou even in private? They're married, in a relationship, and yet he's calling her equivalent of Student Council President over and over even in private while intimate.