Why me?

I have so many babies and children around me, family, friends, loved ones. But non of them are mine, no matter how many times their mummy’s say “oh take them, please, they’re a handful”. I feel like I can’t do the one thing that as a woman I was genetically born to do and every time I miscarry or see that negative pregnancy test I let myself down. I know it’s not my fault and I can’t change anything but I believe In fate and karma. What did I ever do so bad that would deny me the one thing in life that is literally programmed into me as a female as a given right? I’ve lost 12 beautiful souls. Why me? Im a good person 😢