You're okay till it comes out but the exact sperm at the exact moment got you this particular baby, so if you do anything the tiniest bit different, you'll have a different child.
やる前ならＯＫだ ただし正確な 精子 正確な時間が必要だ この特定の赤ちゃんを得る為には ちょっとでも違えば