He wants it every day during the 2ww!

My hubby has been really frisky during this cycles 2ww.. he wants it all the time, I'm trying to both please my man and think about the massive changes my body could possibly be experiencing during this time. I don't wanna push him away but I'm not alway in the mood.. I'd rather read a baby article. .. how do I tell my honey not tonight, without sounding like such a prude. ...