I want to be done

We have been trying to concieve baby number 2 since November and Idk how to tell my husband that i want to stop trying for a while. I have really started trying to lose weight and it is going really well. We have had a few false positives and I feel super discouraged and I just feel like I need a break from it

To focus on myself. He really really wants another baby. I do too but I want to wait some more. How do I tell him ? He is an amazing dad and I love him so much so i dont want to hurt him.