Had a missed miscarriage in January... PREGNANT AGAIN. Tips for telling my fiancé?

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I was SO shocked to see a positive test this morning. I’m only ‘supposed to be’ 6dpo. I didn’t use ovulation sticks and we didn’t have sex anywhere near my good days according to trackers. But here I am VERY PREGNANT. How should I tell my fiancé? What should we do ☺️