After 2 miscarriages... I need advice

I had a miscarriage, then a live birth, then another miscarriage. The losses have been incredibly hard on my fiance and I but we want to have another child.

If I were to become pregnant again, I would hate to put him through the joy, and then crush him again with another miscarriage. I would like some advice on how I should tell him when, or if, I get pregnant again. Do you think I should wait until a doctor appointment and I see a heartbeat? Or should I just put him through it again? I don't think it's right to hide something that grandeous, but I hate seeing that hurt on his face... He doesn't deserve another loss...

Please do not hate on me for thinking about waiting to tell him. That isn't why I'm here. If you dont think I should wait, just say that. Negativity isn't needed. But I do want your honest opinions and advice. Thank you.