Ovulation week.

I'm trying not to conceive. So basically I stay away from sex and from my husband for that week. We had a discussion about my fertile week everytime I'll let him know so he can stay away. But he is doing the opposite , saying that he wants me more . Should I continue telling him when I'm fertile or don't tell him. Specially I'm not on bc. I'm trying to do it the natural way. But I'm scared of having another baby.